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<h1 class="quarto-secondary-nav-title"><span class="chapter-number">5</span> <span class="chapter-title">Mapping With R</span></h1>
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<h2 id="toc-title">Table of contents</h2>
<ul>
<li><a href="#types-of-maps" id="toc-types-of-maps" class="nav-link active" data-scroll-target="#types-of-maps"> <span class="header-section-number">5.1</span> Types of maps</a>
<li><a href="#example-data" id="toc-example-data" class="nav-link" data-scroll-target="#example-data"> <span class="header-section-number">5.1.1</span> Example data</a></li>
<li><a href="#displaying-a-background-map" id="toc-displaying-a-background-map" class="nav-link" data-scroll-target="#displaying-a-background-map"> <span class="header-section-number">5.1.2</span> Displaying a background map</a></li>
<li><a href="#proportional-symbol-map" id="toc-proportional-symbol-map" class="nav-link" data-scroll-target="#proportional-symbol-map"> <span class="header-section-number">5.1.3</span> Proportional symbol map</a></li>
<li><a href="#choropleth-map" id="toc-choropleth-map" class="nav-link" data-scroll-target="#choropleth-map"> <span class="header-section-number">5.1.4</span> Choropleth map</a></li>
<li><a href="#typology-map" id="toc-typology-map" class="nav-link" data-scroll-target="#typology-map"> <span class="header-section-number">5.1.5</span> Typology map</a></li>
<li><a href="#map-of-stocks-and-ratios" id="toc-map-of-stocks-and-ratios" class="nav-link" data-scroll-target="#map-of-stocks-and-ratios"> <span class="header-section-number">5.1.6</span> Map of stocks and ratios</a></li>
<li><a href="#map-of-stocks-and-categories" id="toc-map-of-stocks-and-categories" class="nav-link" data-scroll-target="#map-of-stocks-and-categories"> <span class="header-section-number">5.1.7</span> Map of stocks and categories</a></li>
<li><a href="#layout" id="toc-layout" class="nav-link" data-scroll-target="#layout"> <span class="header-section-number">5.2</span> Layout</a>
<li><a href="#example-data-1" id="toc-example-data-1" class="nav-link" data-scroll-target="#example-data-1"> <span class="header-section-number">5.2.1</span> Example data</a></li>
<li><a href="#themes" id="toc-themes" class="nav-link" data-scroll-target="#themes"> <span class="header-section-number">5.2.2</span> Themes</a></li>
<li><a href="#titles" id="toc-titles" class="nav-link" data-scroll-target="#titles"> <span class="header-section-number">5.2.3</span> Titles</a></li>
<li><a href="#arrow-orientation" id="toc-arrow-orientation" class="nav-link" data-scroll-target="#arrow-orientation"> <span class="header-section-number">5.2.4</span> Arrow orientation</a></li>
<li><a href="#scale" id="toc-scale" class="nav-link" data-scroll-target="#scale"> <span class="header-section-number">5.2.5</span> Scale</a></li>
<li><a href="#credits" id="toc-credits" class="nav-link" data-scroll-target="#credits"> <span class="header-section-number">5.2.6</span> Credits</a></li>
<li><a href="#complete-dressing" id="toc-complete-dressing" class="nav-link" data-scroll-target="#complete-dressing"> <span class="header-section-number">5.2.7</span> Complete dressing</a></li>
<li><a href="#annotations" id="toc-annotations" class="nav-link" data-scroll-target="#annotations"> <span class="header-section-number">5.2.8</span> Annotations</a></li>
<li><a href="#legends" id="toc-legends" class="nav-link" data-scroll-target="#legends"> <span class="header-section-number">5.2.9</span> Legends</a></li>
<li><a href="#labels" id="toc-labels" class="nav-link" data-scroll-target="#labels"> <span class="header-section-number">5.2.10</span> Labels</a></li>
<li><a href="#center-the-map-on-a-region" id="toc-center-the-map-on-a-region" class="nav-link" data-scroll-target="#center-the-map-on-a-region"> <span class="header-section-number">5.2.11</span> Center the map on a region</a></li>
<li><a href="#displaying-several-maps-on-the-sam-figure" id="toc-displaying-several-maps-on-the-sam-figure" class="nav-link" data-scroll-target="#displaying-several-maps-on-the-sam-figure"> <span class="header-section-number">5.2.12</span> Displaying several maps on the sam figure</a></li>
<li><a href="#exporting-maps" id="toc-exporting-maps" class="nav-link" data-scroll-target="#exporting-maps"> <span class="header-section-number">5.2.13</span> Exporting maps</a></li>
<li><a href="#adding-an-image-to-a-map" id="toc-adding-an-image-to-a-map" class="nav-link" data-scroll-target="#adding-an-image-to-a-map"> <span class="header-section-number">5.2.14</span> Adding an image to a map</a></li>
<li><a href="#place-an-item-precisely-on-the-map" id="toc-place-an-item-precisely-on-the-map" class="nav-link" data-scroll-target="#place-an-item-precisely-on-the-map"> <span class="header-section-number">5.2.15</span> Place an item precisely on the map</a></li>
<li><a href="#add-shading-to-a-layer" id="toc-add-shading-to-a-layer" class="nav-link" data-scroll-target="#add-shading-to-a-layer"> <span class="header-section-number">5.2.16</span> Add shading to a layer</a></li>
<li><a href="#creating-boxes" id="toc-creating-boxes" class="nav-link" data-scroll-target="#creating-boxes"> <span class="header-section-number">5.2.17</span> Creating Boxes</a></li>
<li><a href="#d-maps" id="toc-d-maps" class="nav-link" data-scroll-target="#d-maps"> <span class="header-section-number">5.3</span> 3D maps</a>
<li><a href="#linemap" id="toc-linemap" class="nav-link" data-scroll-target="#linemap"> <span class="header-section-number">5.3.1</span> linemap</a></li>
<li><a href="#relief-tanaka" id="toc-relief-tanaka" class="nav-link" data-scroll-target="#relief-tanaka"> <span class="header-section-number">5.3.2</span> Relief Tanaka</a></li>
<li><a href="#cartographic-transformation" id="toc-cartographic-transformation" class="nav-link" data-scroll-target="#cartographic-transformation"> <span class="header-section-number">5.4</span> Cartographic Transformation</a>
<li><a href="#dorlings-cartograms" id="toc-dorlings-cartograms" class="nav-link" data-scroll-target="#dorlings-cartograms"> <span class="header-section-number">5.4.1</span> Dorling’s cartograms</a></li>
<li><a href="#non-continuous-cartograms" id="toc-non-continuous-cartograms" class="nav-link" data-scroll-target="#non-continuous-cartograms"> <span class="header-section-number">5.4.2</span> Non-continuous cartograms</a></li>
<li><a href="#continuous-cartograms" id="toc-continuous-cartograms" class="nav-link" data-scroll-target="#continuous-cartograms"> <span class="header-section-number">5.4.3</span> Continuous cartograms</a></li>
<li><a href="#stengths-and-weaknessses-of-cartograms" id="toc-stengths-and-weaknessses-of-cartograms" class="nav-link" data-scroll-target="#stengths-and-weaknessses-of-cartograms"> <span class="header-section-number">5.4.4</span> Stengths and weaknessses of cartograms</a></li>
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<h1 class="title d-none d-lg-block"><span class="chapter-number">5</span> <span class="chapter-title">Mapping With R</span></h1>
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<section id="types-of-maps" class="level2" data-number="5.1">
<h2 data-number="5.1" class="anchored" data-anchor-id="types-of-maps"><span class="header-section-number">5.1</span> Types of maps</h2>
<p>The fonction <code>mf_map()</code> is the central function of the package <code>mapsf</code> <span class="citation" data-cites="mapsf">(<a href="references.html#ref-mapsf" role="doc-biblioref">Giraud 2022a</a>)</span>. It makes it possible to carry out most of the usual representations in cartography. These main arguments are:</p>
<ul>
<li><code>x</code>, an sf object ;</li>
<li><code>var</code>, the name of variable to present ;</li>
<li><code>type</code>, the type of presentation.</li>
</ul>
<section id="example-data" class="level3" data-number="5.1.1">
<h3 data-number="5.1.1" class="anchored" data-anchor-id="example-data"><span class="header-section-number">5.1.1</span> Example data</h3>
<p>The following lines import the spatial information layers located in the <a href="https://www.geopackage.org/">geopackage</a> <strong>cambodia.gpkg</strong> file.</p>
<div class="cell">
<div class="sourceCode cell-code" id="cb1"><pre class="sourceCode r code-with-copy"><code class="sourceCode r"><span id="cb1-1"><a href="#cb1-1" aria-hidden="true" tabindex="-1"></a><span class="fu">library</span>(sf)</span>
<span id="cb1-2"><a href="#cb1-2" aria-hidden="true" tabindex="-1"></a></span>
<span id="cb1-3"><a href="#cb1-3" aria-hidden="true" tabindex="-1"></a><span class="co">#Import Cambodia country border</span></span>
<span id="cb1-4"><a href="#cb1-4" aria-hidden="true" tabindex="-1"></a>country <span class="ot">=</span> <span class="fu">st_read</span>(<span class="st">"data_cambodia/cambodia.gpkg"</span>, <span class="at">layer =</span> <span class="st">"country"</span>, <span class="at">quiet =</span> <span class="cn">TRUE</span>)</span>
<span id="cb1-5"><a href="#cb1-5" aria-hidden="true" tabindex="-1"></a><span class="co">#Import provincial administrative border of Cambodia</span></span>
<span id="cb1-6"><a href="#cb1-6" aria-hidden="true" tabindex="-1"></a>education <span class="ot">=</span> <span class="fu">st_read</span>(<span class="st">"data_cambodia/cambodia.gpkg"</span>, <span class="at">layer =</span> <span class="st">"education"</span>, <span class="at">quiet =</span> <span class="cn">TRUE</span>)</span>
<span id="cb1-7"><a href="#cb1-7" aria-hidden="true" tabindex="-1"></a><span class="co">#Import district administrative border of Cambodia</span></span>
<span id="cb1-8"><a href="#cb1-8" aria-hidden="true" tabindex="-1"></a>district <span class="ot">=</span> <span class="fu">st_read</span>(<span class="st">"data_cambodia/cambodia.gpkg"</span>, <span class="at">layer =</span> <span class="st">"district"</span>, <span class="at">quiet =</span> <span class="cn">TRUE</span>)</span>
<span id="cb1-9"><a href="#cb1-9" aria-hidden="true" tabindex="-1"></a><span class="co">#Import roads data in Cambodia</span></span>
<span id="cb1-10"><a href="#cb1-10" aria-hidden="true" tabindex="-1"></a>road <span class="ot">=</span> <span class="fu">st_read</span>(<span class="st">"data_cambodia/cambodia.gpkg"</span>, <span class="at">layer =</span> <span class="st">"road"</span>, <span class="at">quiet =</span> <span class="cn">TRUE</span>)</span>
<span id="cb1-11"><a href="#cb1-11" aria-hidden="true" tabindex="-1"></a><span class="co">#Import health center data in Cambodia</span></span>
<span id="cb1-12"><a href="#cb1-12" aria-hidden="true" tabindex="-1"></a>hospital <span class="ot">=</span> <span class="fu">st_read</span>(<span class="st">"data_cambodia/cambodia.gpkg"</span>, <span class="at">layer =</span> <span class="st">"hospital"</span>, <span class="at">quiet =</span> <span class="cn">TRUE</span>)</span></code><button title="Copy to Clipboard" class="code-copy-button"><i class="bi"></i></button></pre></div>
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</section>
<section id="displaying-a-background-map" class="level3" data-number="5.1.2">
<h3 data-number="5.1.2" class="anchored" data-anchor-id="displaying-a-background-map"><span class="header-section-number">5.1.2</span> Displaying a background map</h3>
<p>Without using types specification, the function <code>mf_map()</code> simply display the background map.</p>
<div class="cell">
<div class="sourceCode cell-code" id="cb2"><pre class="sourceCode r code-with-copy"><code class="sourceCode r"><span id="cb2-1"><a href="#cb2-1" aria-hidden="true" tabindex="-1"></a><span class="fu">library</span>(mapsf)</span>
<span id="cb2-2"><a href="#cb2-2" aria-hidden="true" tabindex="-1"></a></span>
<span id="cb2-3"><a href="#cb2-3" aria-hidden="true" tabindex="-1"></a><span class="fu">mf_map</span>(<span class="at">x =</span> district, <span class="at">border =</span> <span class="st">"white"</span>)</span>
<span id="cb2-4"><a href="#cb2-4" aria-hidden="true" tabindex="-1"></a><span class="fu">mf_map</span>(<span class="at">x =</span> country,<span class="at">lwd =</span> <span class="dv">2</span>, <span class="at">col =</span> <span class="cn">NA</span>, <span class="at">add =</span> <span class="cn">TRUE</span>)</span>
<span id="cb2-5"><a href="#cb2-5" aria-hidden="true" tabindex="-1"></a><span class="fu">mf_map</span>(<span class="at">x =</span> road, <span class="at">lwd =</span> .<span class="dv">5</span>, <span class="at">col =</span> <span class="st">"ivory4"</span>, <span class="at">add =</span> <span class="cn">TRUE</span>)</span>
<span id="cb2-6"><a href="#cb2-6" aria-hidden="true" tabindex="-1"></a><span class="fu">mf_map</span>(<span class="at">x =</span> hospital, <span class="at">pch =</span> <span class="dv">20</span>, <span class="at">cex =</span> <span class="dv">1</span>, <span class="at">col =</span> <span class="st">"#FE9A2E"</span>, <span class="at">add =</span> <span class="cn">TRUE</span>) </span></code><button title="Copy to Clipboard" class="code-copy-button"><i class="bi"></i></button></pre></div>
<div class="cell-output-display">
<p><img src="05-mapping_with_r_files/figure-html/mf_base-1.png" class="img-fluid" width="672"></p>
</div>
</div>
</section>
<section id="proportional-symbol-map" class="level3" data-number="5.1.3">
<h3 data-number="5.1.3" class="anchored" data-anchor-id="proportional-symbol-map"><span class="header-section-number">5.1.3</span> Proportional symbol map</h3>
<p>Proportional symbol maps are used to represent inventory variables (absolute quantitative variables, sum and average make sense). The function <code>mf_map(..., type = "prop")</code> proposes this representation.</p>
<div class="cell">
<div class="sourceCode cell-code" id="cb3"><pre class="sourceCode r code-with-copy"><code class="sourceCode r"><span id="cb3-1"><a href="#cb3-1" aria-hidden="true" tabindex="-1"></a><span class="co">#District</span></span>
<span id="cb3-2"><a href="#cb3-2" aria-hidden="true" tabindex="-1"></a><span class="fu">mf_map</span>(<span class="at">x =</span> district) </span>
<span id="cb3-3"><a href="#cb3-3" aria-hidden="true" tabindex="-1"></a></span>
<span id="cb3-4"><a href="#cb3-4" aria-hidden="true" tabindex="-1"></a><span class="co"># Proportional symbol </span></span>
<span id="cb3-5"><a href="#cb3-5" aria-hidden="true" tabindex="-1"></a><span class="fu">mf_map</span>(</span>
<span id="cb3-6"><a href="#cb3-6" aria-hidden="true" tabindex="-1"></a> <span class="at">x =</span> district, </span>
<span id="cb3-7"><a href="#cb3-7" aria-hidden="true" tabindex="-1"></a> <span class="at">var =</span> <span class="st">"T_POP"</span>,</span>
<span id="cb3-8"><a href="#cb3-8" aria-hidden="true" tabindex="-1"></a> <span class="at">val_max =</span> <span class="dv">700000</span>,</span>
<span id="cb3-9"><a href="#cb3-9" aria-hidden="true" tabindex="-1"></a> <span class="at">type =</span> <span class="st">"prop"</span>,</span>
<span id="cb3-10"><a href="#cb3-10" aria-hidden="true" tabindex="-1"></a> <span class="at">col =</span> <span class="st">"#148F77"</span>, </span>
<span id="cb3-11"><a href="#cb3-11" aria-hidden="true" tabindex="-1"></a> <span class="at">leg_title =</span> <span class="st">"Population 2019"</span></span>
<span id="cb3-12"><a href="#cb3-12" aria-hidden="true" tabindex="-1"></a>)</span>
<span id="cb3-13"><a href="#cb3-13" aria-hidden="true" tabindex="-1"></a></span>
<span id="cb3-14"><a href="#cb3-14" aria-hidden="true" tabindex="-1"></a><span class="co"># Title</span></span>
<span id="cb3-15"><a href="#cb3-15" aria-hidden="true" tabindex="-1"></a><span class="fu">mf_title</span>(<span class="st">"Distribution of population in provincial level"</span>)</span></code><button title="Copy to Clipboard" class="code-copy-button"><i class="bi"></i></button></pre></div>
<div class="cell-output-display">
<p><img src="05-mapping_with_r_files/figure-html/proportional_symbols-1.png" class="img-fluid" width="672"></p>
</div>
</div>
<section id="compare-multiple-map" class="level4" data-number="5.1.3.1">
<h4 data-number="5.1.3.1" class="anchored" data-anchor-id="compare-multiple-map"><span class="header-section-number">5.1.3.1</span> Compare multiple map</h4>
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<p>It is possible to fix the dimensions of the largest symbol corresponding to a certain value with the arguments <code>inches</code> and <code>val_max</code>. We can use construct maps with comparable proportional symbols.</p>
<div class="cell">
<div class="sourceCode cell-code" id="cb4"><pre class="sourceCode r code-with-copy"><code class="sourceCode r"><span id="cb4-1"><a href="#cb4-1" aria-hidden="true" tabindex="-1"></a><span class="fu">par</span>(<span class="at">mfrow =</span> <span class="fu">c</span>(<span class="dv">1</span>,<span class="dv">2</span>)) <span class="co">#Displaying two maps facing each other</span></span>
<span id="cb4-2"><a href="#cb4-2" aria-hidden="true" tabindex="-1"></a></span>
<span id="cb4-3"><a href="#cb4-3" aria-hidden="true" tabindex="-1"></a><span class="co">#district</span></span>
<span id="cb4-4"><a href="#cb4-4" aria-hidden="true" tabindex="-1"></a><span class="fu">mf_map</span>(<span class="at">x =</span> district, <span class="at">border =</span> <span class="st">"grey90"</span>, <span class="at">lwd =</span> .<span class="dv">5</span>) </span>
<span id="cb4-5"><a href="#cb4-5" aria-hidden="true" tabindex="-1"></a><span class="co"># Add male Population</span></span>
<span id="cb4-6"><a href="#cb4-6" aria-hidden="true" tabindex="-1"></a><span class="fu">mf_map</span>(</span>
<span id="cb4-7"><a href="#cb4-7" aria-hidden="true" tabindex="-1"></a> <span class="at">x =</span> district, </span>
<span id="cb4-8"><a href="#cb4-8" aria-hidden="true" tabindex="-1"></a> <span class="at">var =</span> <span class="st">"Male"</span>, </span>
<span id="cb4-9"><a href="#cb4-9" aria-hidden="true" tabindex="-1"></a> <span class="at">type =</span> <span class="st">"prop"</span>,</span>
<span id="cb4-10"><a href="#cb4-10" aria-hidden="true" tabindex="-1"></a> <span class="at">col =</span> <span class="st">"#1F618D"</span>,</span>
<span id="cb4-11"><a href="#cb4-11" aria-hidden="true" tabindex="-1"></a> <span class="at">inches =</span> <span class="fl">0.2</span>, </span>
<span id="cb4-12"><a href="#cb4-12" aria-hidden="true" tabindex="-1"></a> <span class="at">val_max =</span> <span class="dv">300000</span>, </span>
<span id="cb4-13"><a href="#cb4-13" aria-hidden="true" tabindex="-1"></a> <span class="at">leg_title =</span> <span class="st">"Male"</span>, </span>
<span id="cb4-14"><a href="#cb4-14" aria-hidden="true" tabindex="-1"></a> <span class="at">leg_val_cex =</span> <span class="fl">0.5</span>,</span>
<span id="cb4-15"><a href="#cb4-15" aria-hidden="true" tabindex="-1"></a>)</span>
<span id="cb4-16"><a href="#cb4-16" aria-hidden="true" tabindex="-1"></a><span class="fu">mf_title</span>(<span class="st">"Male Population by Distict"</span>) <span class="co">#Adding map title</span></span>
<span id="cb4-17"><a href="#cb4-17" aria-hidden="true" tabindex="-1"></a></span>
<span id="cb4-18"><a href="#cb4-18" aria-hidden="true" tabindex="-1"></a><span class="co">#district</span></span>
<span id="cb4-19"><a href="#cb4-19" aria-hidden="true" tabindex="-1"></a><span class="fu">mf_map</span>(<span class="at">x =</span> district, <span class="at">border =</span> <span class="st">"grey90"</span>, <span class="at">lwd =</span> .<span class="dv">5</span>) </span>
<span id="cb4-20"><a href="#cb4-20" aria-hidden="true" tabindex="-1"></a><span class="co"># Add female Population</span></span>
<span id="cb4-21"><a href="#cb4-21" aria-hidden="true" tabindex="-1"></a><span class="fu">mf_map</span>(</span>
<span id="cb4-22"><a href="#cb4-22" aria-hidden="true" tabindex="-1"></a> <span class="at">x =</span> district, </span>
<span id="cb4-23"><a href="#cb4-23" aria-hidden="true" tabindex="-1"></a> <span class="at">var =</span> <span class="st">"Female"</span>, </span>
<span id="cb4-24"><a href="#cb4-24" aria-hidden="true" tabindex="-1"></a> <span class="at">type =</span> <span class="st">"prop"</span>,</span>
<span id="cb4-25"><a href="#cb4-25" aria-hidden="true" tabindex="-1"></a> <span class="at">col =</span> <span class="st">"#E74C3C"</span>,</span>
<span id="cb4-26"><a href="#cb4-26" aria-hidden="true" tabindex="-1"></a> <span class="at">inches =</span> <span class="fl">0.2</span>, </span>
<span id="cb4-27"><a href="#cb4-27" aria-hidden="true" tabindex="-1"></a> <span class="at">val_max =</span> <span class="dv">300000</span>, </span>
<span id="cb4-28"><a href="#cb4-28" aria-hidden="true" tabindex="-1"></a> <span class="at">leg_title =</span><span class="st">"Female"</span>, </span>
<span id="cb4-29"><a href="#cb4-29" aria-hidden="true" tabindex="-1"></a> <span class="at">leg_val_cex =</span> <span class="fl">0.5</span></span>
<span id="cb4-30"><a href="#cb4-30" aria-hidden="true" tabindex="-1"></a>)</span>
<span id="cb4-31"><a href="#cb4-31" aria-hidden="true" tabindex="-1"></a><span class="fu">mf_title</span>(<span class="st">"Female Population by Distict"</span>) <span class="co">#Adding map title</span></span></code><button title="Copy to Clipboard" class="code-copy-button"><i class="bi"></i></button></pre></div>
<div class="cell-output-display">
<p><img src="05-mapping_with_r_files/figure-html/proportional_symbols_comp-1.png" class="img-fluid" width="672"></p>
</div>
</div>
<p>Here we have displayed two maps facing each other, see the point <a href="#afficher-plusieurs-cartes-sur-la-même-figure">Displaying several maps on the same figure</a> for more details.</p>
</section>
</section>
<section id="choropleth-map" class="level3" data-number="5.1.4">
<h3 data-number="5.1.4" class="anchored" data-anchor-id="choropleth-map"><span class="header-section-number">5.1.4</span> Choropleth map</h3>
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<p>Choropleth maps are used to represent ratio variables (relative quantitative variables, mean has meaning, sum has no meaning).</p>
<p>For this type of representation, you must first:</p>
<ul>
<li>choose a discretization method to transform a continuous statistical series into classes defined by intervals,</li>
<li>choose a number of classes,</li>
<li>choose a color palette.</li>
</ul>
<p>The function mf_map(…, type = “choro”)makes it possible to create choroplete maps. The arguments nbreaks and breaks are used to parameterize the discretizations, and the function <code>mf_get_breaks()</code> makes it possible to work on the discretizations outside the function <code>mf_map()</code>. Similarly, the argument palis used to fill in a color palette, but several functions can be used to set the palettes apart from the (<code>mf_get_pal</code>…) function.</p>
<div class="cell">
<div class="sourceCode cell-code" id="cb5"><pre class="sourceCode r code-with-copy"><code class="sourceCode r"><span id="cb5-1"><a href="#cb5-1" aria-hidden="true" tabindex="-1"></a><span class="co"># Population density (inhabitants/km2) using the sf::st_area() function</span></span>
<span id="cb5-2"><a href="#cb5-2" aria-hidden="true" tabindex="-1"></a>district<span class="sc">$</span>DENS <span class="ot"><-</span> <span class="fl">1e6</span> <span class="sc">*</span> district<span class="sc">$</span>T_POP <span class="sc">/</span> <span class="fu">as.numeric</span>(<span class="fu">st_area</span>(district)) <span class="co">#Calculate population density </span></span>
<span id="cb5-3"><a href="#cb5-3" aria-hidden="true" tabindex="-1"></a><span class="fu">mf_map</span>(</span>
<span id="cb5-4"><a href="#cb5-4" aria-hidden="true" tabindex="-1"></a> <span class="at">x =</span> district,</span>
<span id="cb5-5"><a href="#cb5-5" aria-hidden="true" tabindex="-1"></a> <span class="at">var =</span> <span class="st">"DENS"</span>,</span>
<span id="cb5-6"><a href="#cb5-6" aria-hidden="true" tabindex="-1"></a> <span class="at">type =</span> <span class="st">"choro"</span>,</span>
<span id="cb5-7"><a href="#cb5-7" aria-hidden="true" tabindex="-1"></a> <span class="at">breaks =</span> <span class="st">"quantile"</span>,</span>
<span id="cb5-8"><a href="#cb5-8" aria-hidden="true" tabindex="-1"></a> <span class="at">pal =</span> <span class="st">"BuGn"</span>,</span>
<span id="cb5-9"><a href="#cb5-9" aria-hidden="true" tabindex="-1"></a> <span class="at">lwd =</span> <span class="dv">1</span>,</span>
<span id="cb5-10"><a href="#cb5-10" aria-hidden="true" tabindex="-1"></a> <span class="at">leg_title =</span> <span class="st">"Distribution of population</span><span class="sc">\n</span><span class="st">(inhabitants per km2)"</span>, </span>
<span id="cb5-11"><a href="#cb5-11" aria-hidden="true" tabindex="-1"></a> <span class="at">leg_val_rnd =</span> <span class="dv">0</span></span>
<span id="cb5-12"><a href="#cb5-12" aria-hidden="true" tabindex="-1"></a>)</span>
<span id="cb5-13"><a href="#cb5-13" aria-hidden="true" tabindex="-1"></a><span class="fu">mf_title</span>(<span class="st">"Distribution of the population in (2019)"</span>)</span></code><button title="Copy to Clipboard" class="code-copy-button"><i class="bi"></i></button></pre></div>
<div class="cell-output-display">
<p><img src="05-mapping_with_r_files/figure-html/choro-1.png" class="img-fluid" width="672"></p>
</div>
</div>
<section id="discretisation" class="level4" data-number="5.1.4.1">
<h4 data-number="5.1.4.1" class="anchored" data-anchor-id="discretisation"><span class="header-section-number">5.1.4.1</span> Discretisation</h4>
<p>The fonction <code>mf_get_breaks()</code> provides the methods of discretization of classic variables: quantiles, average/standard deviation, equal amplitudes, nested averages, Fisher-Jenks, geometric, etc.</p>
<div class="cell">
<div class="sourceCode cell-code" id="cb6"><pre class="sourceCode r code-with-copy"><code class="sourceCode r"><span id="cb6-1"><a href="#cb6-1" aria-hidden="true" tabindex="-1"></a>education<span class="sc">$</span>enrol_g_pct <span class="ot">=</span> <span class="dv">100</span> <span class="sc">*</span> education<span class="sc">$</span>enrol_girl<span class="sc">/</span>education<span class="sc">$</span>t_enrol <span class="co">#Calculate percentage of enrolled girl student</span></span>
<span id="cb6-2"><a href="#cb6-2" aria-hidden="true" tabindex="-1"></a></span>
<span id="cb6-3"><a href="#cb6-3" aria-hidden="true" tabindex="-1"></a>d1 <span class="ot">=</span> <span class="fu">mf_get_breaks</span>(education<span class="sc">$</span>enrol_g_pct, <span class="at">nbreaks =</span> <span class="dv">6</span>, <span class="at">breaks =</span> <span class="st">"equal"</span>, <span class="at">freq =</span> <span class="cn">TRUE</span>)</span>
<span id="cb6-4"><a href="#cb6-4" aria-hidden="true" tabindex="-1"></a>d2 <span class="ot">=</span> <span class="fu">mf_get_breaks</span>(education<span class="sc">$</span>enrol_g_pct, <span class="at">nbreaks =</span> <span class="dv">6</span>, <span class="at">breaks =</span> <span class="st">"quantile"</span>)</span>
<span id="cb6-5"><a href="#cb6-5" aria-hidden="true" tabindex="-1"></a>d3 <span class="ot">=</span> <span class="fu">mf_get_breaks</span>(education<span class="sc">$</span>enrol_g_pct, <span class="at">nbreaks =</span> <span class="dv">6</span>, <span class="at">breaks =</span> <span class="st">"geom"</span>)</span>
<span id="cb6-6"><a href="#cb6-6" aria-hidden="true" tabindex="-1"></a>d4 <span class="ot">=</span> <span class="fu">mf_get_breaks</span>(education<span class="sc">$</span>enrol_g_pct, <span class="at">breaks =</span> <span class="st">"msd"</span>, <span class="at">central =</span> <span class="cn">FALSE</span>)</span></code><button title="Copy to Clipboard" class="code-copy-button"><i class="bi"></i></button></pre></div>
</div>
<div class="cell">
<div class="cell-output-display">
<p><img src="05-mapping_with_r_files/figure-html/discr3-1.png" class="img-fluid" width="768"></p>
</div>
</div>
</section>
<section id="palettes" class="level4" data-number="5.1.4.2">
<h4 data-number="5.1.4.2" class="anchored" data-anchor-id="palettes"><span class="header-section-number">5.1.4.2</span> Color palettes</h4>
<p>The argument <code>pal</code> de <code>mf_map()</code> is dedicated to choosing a color palette. The palettes provided by the function <code>hcl.colors()</code> can be used directly.</p>
<div class="cell">
<div class="sourceCode cell-code" id="cb7"><pre class="sourceCode r code-with-copy"><code class="sourceCode r"><span id="cb7-1"><a href="#cb7-1" aria-hidden="true" tabindex="-1"></a><span class="fu">mf_map</span>(<span class="at">x =</span> education, <span class="at">var =</span> <span class="st">"enrol_g_pct"</span>, <span class="at">type =</span> <span class="st">"choro"</span>,</span>
<span id="cb7-2"><a href="#cb7-2" aria-hidden="true" tabindex="-1"></a> <span class="at">breaks =</span> d3, <span class="at">pal =</span> <span class="st">"Reds 3"</span>)</span></code><button title="Copy to Clipboard" class="code-copy-button"><i class="bi"></i></button></pre></div>
<div class="cell-output-display">
<p><img src="05-mapping_with_r_files/figure-html/pal1-1.png" class="img-fluid" width="576"></p>
</div>
</div>
<div class="quarto-figure quarto-figure-center">
<figure class="figure">
<p><img src="img/swatch-plot-1.svg" class="img-fluid figure-img" width="600"></p>
</figure>
</div>
<p>The fonction <code>mf_get_pal()</code> allows you to build a color palette. This function is especially useful for creating balanced asymmetrical diverging palettes.</p>
<div class="cell" data-nm="true">
<div class="sourceCode cell-code" id="cb8"><pre class="sourceCode r code-with-copy"><code class="sourceCode r"><span id="cb8-1"><a href="#cb8-1" aria-hidden="true" tabindex="-1"></a>mypal <span class="ot"><-</span> <span class="fu">mf_get_pal</span>(<span class="at">n =</span> <span class="fu">c</span>(<span class="dv">4</span>,<span class="dv">6</span>), <span class="at">palette =</span> <span class="fu">c</span>(<span class="st">"Burg"</span>, <span class="st">"Teal"</span>))</span>
<span id="cb8-2"><a href="#cb8-2" aria-hidden="true" tabindex="-1"></a><span class="fu">image</span>(<span class="dv">1</span><span class="sc">:</span><span class="dv">10</span>, <span class="dv">1</span>, <span class="fu">as.matrix</span>(<span class="dv">1</span><span class="sc">:</span><span class="dv">10</span>), <span class="at">col=</span>mypal, <span class="at">xlab =</span> <span class="st">""</span>, <span class="at">ylab =</span> <span class="st">""</span>, <span class="at">xaxt =</span> <span class="st">"n"</span>,</span>
<span id="cb8-3"><a href="#cb8-3" aria-hidden="true" tabindex="-1"></a> <span class="at">yaxt =</span> <span class="st">"n"</span>,<span class="at">bty =</span> <span class="st">"n"</span>)</span></code><button title="Copy to Clipboard" class="code-copy-button"><i class="bi"></i></button></pre></div>
<div class="cell-output-display">
<p><img src="05-mapping_with_r_files/figure-html/pal2-1.png" class="img-fluid" width="672"></p>
</div>
</div>
</section>
<section id="for-a-point-layer" class="level4" data-number="5.1.4.3">
<h4 data-number="5.1.4.3" class="anchored" data-anchor-id="for-a-point-layer"><span class="header-section-number">5.1.4.3</span> For a point layer</h4>
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<p>It is possible to use this mode of presentation in specific implementation also.</p>
<div class="cell">
<div class="sourceCode cell-code" id="cb9"><pre class="sourceCode r code-with-copy"><code class="sourceCode r"><span id="cb9-1"><a href="#cb9-1" aria-hidden="true" tabindex="-1"></a>dist_c <span class="ot"><-</span> <span class="fu">st_centroid</span>(district)</span>
<span id="cb9-2"><a href="#cb9-2" aria-hidden="true" tabindex="-1"></a><span class="fu">mf_map</span>(district)</span>
<span id="cb9-3"><a href="#cb9-3" aria-hidden="true" tabindex="-1"></a><span class="fu">mf_map</span>(</span>
<span id="cb9-4"><a href="#cb9-4" aria-hidden="true" tabindex="-1"></a> <span class="at">x =</span> dist_c,</span>
<span id="cb9-5"><a href="#cb9-5" aria-hidden="true" tabindex="-1"></a> <span class="at">var =</span> <span class="st">"DENS"</span>,</span>
<span id="cb9-6"><a href="#cb9-6" aria-hidden="true" tabindex="-1"></a> <span class="at">type =</span> <span class="st">"choro"</span>,</span>
<span id="cb9-7"><a href="#cb9-7" aria-hidden="true" tabindex="-1"></a> <span class="at">breaks =</span> <span class="st">"quantile"</span>,</span>
<span id="cb9-8"><a href="#cb9-8" aria-hidden="true" tabindex="-1"></a> <span class="at">nbreaks =</span> <span class="dv">5</span>,</span>
<span id="cb9-9"><a href="#cb9-9" aria-hidden="true" tabindex="-1"></a> <span class="at">pal =</span> <span class="st">"PuRd"</span>,</span>
<span id="cb9-10"><a href="#cb9-10" aria-hidden="true" tabindex="-1"></a> <span class="at">pch =</span> <span class="dv">23</span>,</span>
<span id="cb9-11"><a href="#cb9-11" aria-hidden="true" tabindex="-1"></a> <span class="at">cex =</span> <span class="fl">1.5</span>,</span>
<span id="cb9-12"><a href="#cb9-12" aria-hidden="true" tabindex="-1"></a> <span class="at">border =</span> <span class="st">"white"</span>,</span>
<span id="cb9-13"><a href="#cb9-13" aria-hidden="true" tabindex="-1"></a> <span class="at">lwd =</span> .<span class="dv">7</span>,</span>
<span id="cb9-14"><a href="#cb9-14" aria-hidden="true" tabindex="-1"></a> <span class="at">leg_pos =</span> <span class="st">"topleft"</span>,</span>
<span id="cb9-15"><a href="#cb9-15" aria-hidden="true" tabindex="-1"></a> <span class="at">leg_title =</span> <span class="st">"Distribution of population</span><span class="sc">\n</span><span class="st">(inhabitants per km2)"</span>, </span>
<span id="cb9-16"><a href="#cb9-16" aria-hidden="true" tabindex="-1"></a> <span class="at">leg_val_rnd =</span> <span class="dv">0</span>, </span>
<span id="cb9-17"><a href="#cb9-17" aria-hidden="true" tabindex="-1"></a> <span class="at">add =</span> <span class="cn">TRUE</span></span>
<span id="cb9-18"><a href="#cb9-18" aria-hidden="true" tabindex="-1"></a>)</span>
<span id="cb9-19"><a href="#cb9-19" aria-hidden="true" tabindex="-1"></a><span class="fu">mf_title</span>(<span class="st">"Distribution of population in (2019)"</span>)</span></code><button title="Copy to Clipboard" class="code-copy-button"><i class="bi"></i></button></pre></div>
<div class="cell-output-display">
<p><img src="05-mapping_with_r_files/figure-html/choropt-1.png" class="img-fluid" width="672"></p>
</div>
</div>
</section>
</section>
<section id="typology-map" class="level3" data-number="5.1.5">
<h3 data-number="5.1.5" class="anchored" data-anchor-id="typology-map"><span class="header-section-number">5.1.5</span> Typology map</h3>
<p>Typology maps are used to represent qualitative variables. The function <code>mf_map(..., type = "typo")</code> proposes this representation.</p>
<div class="cell">
<div class="sourceCode cell-code" id="cb10"><pre class="sourceCode r code-with-copy"><code class="sourceCode r"><span id="cb10-1"><a href="#cb10-1" aria-hidden="true" tabindex="-1"></a><span class="fu">mf_map</span>(</span>
<span id="cb10-2"><a href="#cb10-2" aria-hidden="true" tabindex="-1"></a> <span class="at">x =</span> district,</span>
<span id="cb10-3"><a href="#cb10-3" aria-hidden="true" tabindex="-1"></a> <span class="at">var=</span><span class="st">"Status"</span>,</span>
<span id="cb10-4"><a href="#cb10-4" aria-hidden="true" tabindex="-1"></a> <span class="at">type =</span> <span class="st">"typo"</span>,</span>
<span id="cb10-5"><a href="#cb10-5" aria-hidden="true" tabindex="-1"></a> <span class="at">pal =</span> <span class="fu">c</span>(<span class="st">'#E8F9FD'</span>,<span class="st">'#FF7396'</span>,<span class="st">'#E4BAD4'</span>,<span class="st">'#FFE3FE'</span>),</span>
<span id="cb10-6"><a href="#cb10-6" aria-hidden="true" tabindex="-1"></a> <span class="at">lwd =</span> .<span class="dv">7</span>,</span>
<span id="cb10-7"><a href="#cb10-7" aria-hidden="true" tabindex="-1"></a> <span class="at">leg_title =</span> <span class="st">""</span></span>
<span id="cb10-8"><a href="#cb10-8" aria-hidden="true" tabindex="-1"></a>)</span>
<span id="cb10-9"><a href="#cb10-9" aria-hidden="true" tabindex="-1"></a><span class="fu">mf_title</span>(<span class="st">"Administrative status by size of area"</span>)</span></code><button title="Copy to Clipboard" class="code-copy-button"><i class="bi"></i></button></pre></div>
<div class="cell-output-display">
<p><img src="05-mapping_with_r_files/figure-html/typo_simple-1.png" class="img-fluid" width="672"></p>
</div>
</div>
<section id="ordering-value-in-the-legend" class="level4" data-number="5.1.5.1">
<h4 data-number="5.1.5.1" class="anchored" data-anchor-id="ordering-value-in-the-legend"><span class="header-section-number">5.1.5.1</span> Ordering value in the legend</h4>
<p>The argument <code>val_order</code> is used to order the categories in the</p>
<div class="cell">
<div class="sourceCode cell-code" id="cb11"><pre class="sourceCode r code-with-copy"><code class="sourceCode r"><span id="cb11-1"><a href="#cb11-1" aria-hidden="true" tabindex="-1"></a><span class="fu">mf_map</span>(</span>
<span id="cb11-2"><a href="#cb11-2" aria-hidden="true" tabindex="-1"></a> <span class="at">x =</span> district,</span>
<span id="cb11-3"><a href="#cb11-3" aria-hidden="true" tabindex="-1"></a> <span class="at">var=</span><span class="st">"Status"</span>,</span>
<span id="cb11-4"><a href="#cb11-4" aria-hidden="true" tabindex="-1"></a> <span class="at">type =</span> <span class="st">"typo"</span>,</span>
<span id="cb11-5"><a href="#cb11-5" aria-hidden="true" tabindex="-1"></a> <span class="at">pal =</span> <span class="fu">c</span>(<span class="st">'#E8F9FD'</span>,<span class="st">'#FF7396'</span>,<span class="st">'#E4BAD4'</span>,<span class="st">'#FFE3FE'</span>),</span>
<span id="cb11-6"><a href="#cb11-6" aria-hidden="true" tabindex="-1"></a> <span class="at">val_order =</span> <span class="fu">c</span>(<span class="st">"1st largest district"</span>, <span class="st">"2nd largest district"</span>, <span class="st">"3rd largest district"</span>,<span class="st">"<4500km2"</span>),</span>
<span id="cb11-7"><a href="#cb11-7" aria-hidden="true" tabindex="-1"></a> <span class="at">lwd =</span> .<span class="dv">7</span>,</span>
<span id="cb11-8"><a href="#cb11-8" aria-hidden="true" tabindex="-1"></a> <span class="at">leg_title =</span> <span class="st">""</span></span>
<span id="cb11-9"><a href="#cb11-9" aria-hidden="true" tabindex="-1"></a>)</span>
<span id="cb11-10"><a href="#cb11-10" aria-hidden="true" tabindex="-1"></a><span class="fu">mf_title</span>(<span class="st">"Administrative status by size of area"</span>)</span></code><button title="Copy to Clipboard" class="code-copy-button"><i class="bi"></i></button></pre></div>
<div class="cell-output-display">
<p><img src="05-mapping_with_r_files/figure-html/typo_order-1.png" class="img-fluid" width="672"></p>
</div>
</div>
</section>
<section id="map-of-point" class="level4" data-number="5.1.5.2">
<h4 data-number="5.1.5.2" class="anchored" data-anchor-id="map-of-point"><span class="header-section-number">5.1.5.2</span> Map of point</h4>
<p>When the implantation of the layer is punctual, symbols are used to carry the colors of the typology.</p>
<div class="cell">
<div class="sourceCode cell-code" id="cb12"><pre class="sourceCode r code-with-copy"><code class="sourceCode r"><span id="cb12-1"><a href="#cb12-1" aria-hidden="true" tabindex="-1"></a><span class="co">#extract centroid point of the district</span></span>
<span id="cb12-2"><a href="#cb12-2" aria-hidden="true" tabindex="-1"></a>dist_ctr <span class="ot"><-</span> <span class="fu">st_centroid</span>(district[district<span class="sc">$</span>Status <span class="sc">!=</span> <span class="st">"<4500km2"</span>, ])</span>
<span id="cb12-3"><a href="#cb12-3" aria-hidden="true" tabindex="-1"></a><span class="fu">mf_map</span>(district)</span>
<span id="cb12-4"><a href="#cb12-4" aria-hidden="true" tabindex="-1"></a><span class="fu">mf_map</span>(</span>
<span id="cb12-5"><a href="#cb12-5" aria-hidden="true" tabindex="-1"></a> <span class="at">x =</span> dist_ctr,</span>
<span id="cb12-6"><a href="#cb12-6" aria-hidden="true" tabindex="-1"></a> <span class="at">var =</span> <span class="st">"Status"</span>,</span>
<span id="cb12-7"><a href="#cb12-7" aria-hidden="true" tabindex="-1"></a> <span class="at">type =</span> <span class="st">"typo"</span>,</span>
<span id="cb12-8"><a href="#cb12-8" aria-hidden="true" tabindex="-1"></a> <span class="at">cex =</span> <span class="dv">2</span>,</span>
<span id="cb12-9"><a href="#cb12-9" aria-hidden="true" tabindex="-1"></a> <span class="at">pch =</span> <span class="dv">22</span>,</span>
<span id="cb12-10"><a href="#cb12-10" aria-hidden="true" tabindex="-1"></a> <span class="at">pal =</span> <span class="fu">c</span>(<span class="st">'#FF7396'</span>,<span class="st">'#E4BAD4'</span>,<span class="st">'#FFE3FE'</span>),</span>
<span id="cb12-11"><a href="#cb12-11" aria-hidden="true" tabindex="-1"></a> <span class="at">leg_title =</span> <span class="st">""</span>,</span>
<span id="cb12-12"><a href="#cb12-12" aria-hidden="true" tabindex="-1"></a> <span class="at">leg_pos =</span> <span class="st">"bottomright"</span>,</span>
<span id="cb12-13"><a href="#cb12-13" aria-hidden="true" tabindex="-1"></a> <span class="at">add =</span> <span class="cn">TRUE</span></span>
<span id="cb12-14"><a href="#cb12-14" aria-hidden="true" tabindex="-1"></a>)</span>
<span id="cb12-15"><a href="#cb12-15" aria-hidden="true" tabindex="-1"></a><span class="fu">mf_title</span>(<span class="st">"Administrative status by size of area"</span>)</span></code><button title="Copy to Clipboard" class="code-copy-button"><i class="bi"></i></button></pre></div>
<div class="cell-output-display">
<p><img src="05-mapping_with_r_files/figure-html/typo_point-1.png" class="img-fluid" width="672"></p>
</div>
</div>
</section>
<section id="map-of-lines" class="level4" data-number="5.1.5.3">
<h4 data-number="5.1.5.3" class="anchored" data-anchor-id="map-of-lines"><span class="header-section-number">5.1.5.3</span> Map of lines</h4>
<div class="cell">
<div class="sourceCode cell-code" id="cb13"><pre class="sourceCode r code-with-copy"><code class="sourceCode r"><span id="cb13-1"><a href="#cb13-1" aria-hidden="true" tabindex="-1"></a><span class="co">#Selection of roads that intersect the city of Siem Reap</span></span>
<span id="cb13-2"><a href="#cb13-2" aria-hidden="true" tabindex="-1"></a>pp <span class="ot"><-</span> district[district<span class="sc">$</span>ADM1_EN <span class="sc">==</span> <span class="st">"Phnom Penh"</span>, ]</span>
<span id="cb13-3"><a href="#cb13-3" aria-hidden="true" tabindex="-1"></a>road_pp <span class="ot"><-</span> road[<span class="fu">st_intersects</span>(<span class="at">x =</span> road, <span class="at">y =</span> pp, <span class="at">sparse =</span> <span class="cn">FALSE</span>), ]</span>
<span id="cb13-4"><a href="#cb13-4" aria-hidden="true" tabindex="-1"></a><span class="fu">mf_map</span>(pp)</span>
<span id="cb13-5"><a href="#cb13-5" aria-hidden="true" tabindex="-1"></a><span class="fu">mf_map</span>(</span>
<span id="cb13-6"><a href="#cb13-6" aria-hidden="true" tabindex="-1"></a> <span class="at">x =</span> road_pp,</span>
<span id="cb13-7"><a href="#cb13-7" aria-hidden="true" tabindex="-1"></a> <span class="at">var =</span> <span class="st">"fclass"</span>,</span>
<span id="cb13-8"><a href="#cb13-8" aria-hidden="true" tabindex="-1"></a> <span class="at">type =</span> <span class="st">"typo"</span>,</span>
<span id="cb13-9"><a href="#cb13-9" aria-hidden="true" tabindex="-1"></a> <span class="at">lwd =</span> <span class="fl">1.2</span>,</span>
<span id="cb13-10"><a href="#cb13-10" aria-hidden="true" tabindex="-1"></a> <span class="at">pal =</span> <span class="fu">mf_get_pal</span>(<span class="at">n =</span> <span class="dv">6</span>, <span class="st">"Tropic"</span>),</span>
<span id="cb13-11"><a href="#cb13-11" aria-hidden="true" tabindex="-1"></a> <span class="at">leg_title =</span> <span class="st">"Types of road"</span>,</span>
<span id="cb13-12"><a href="#cb13-12" aria-hidden="true" tabindex="-1"></a> <span class="at">leg_pos =</span> <span class="st">"topright"</span>,</span>
<span id="cb13-13"><a href="#cb13-13" aria-hidden="true" tabindex="-1"></a> <span class="at">leg_frame =</span> T,</span>
<span id="cb13-14"><a href="#cb13-14" aria-hidden="true" tabindex="-1"></a> <span class="at">add =</span> <span class="cn">TRUE</span></span>
<span id="cb13-15"><a href="#cb13-15" aria-hidden="true" tabindex="-1"></a>)</span>
<span id="cb13-16"><a href="#cb13-16" aria-hidden="true" tabindex="-1"></a><span class="fu">mf_title</span>(<span class="st">"Administrative status"</span>)</span></code><button title="Copy to Clipboard" class="code-copy-button"><i class="bi"></i></button></pre></div>
<div class="cell-output-display">
<p><img src="05-mapping_with_r_files/figure-html/unnamed-chunk-2-1.png" class="img-fluid" width="672"></p>
</div>
</div>
</section>
</section>
<section id="map-of-stocks-and-ratios" class="level3" data-number="5.1.6">
<h3 data-number="5.1.6" class="anchored" data-anchor-id="map-of-stocks-and-ratios"><span class="header-section-number">5.1.6</span> Map of stocks and ratios</h3>
<p>The function <code>mf_map(..., var = c("var1", "var2"), type = "prop_choro")</code> represents proportional symbols whose areas are proportional to the values of one variable and whose color is based on the discretization of a second variable. The function uses the arguments of the functions <code>mf_map(..., type = "prop")</code> and <code>mf_map(..., type = "choro")</code>.</p>
<div class="cell">
<div class="sourceCode cell-code" id="cb14"><pre class="sourceCode r code-with-copy"><code class="sourceCode r"><span id="cb14-1"><a href="#cb14-1" aria-hidden="true" tabindex="-1"></a><span class="fu">mf_map</span>(<span class="at">x =</span> district)</span>
<span id="cb14-2"><a href="#cb14-2" aria-hidden="true" tabindex="-1"></a><span class="fu">mf_map</span>(</span>
<span id="cb14-3"><a href="#cb14-3" aria-hidden="true" tabindex="-1"></a> <span class="at">x =</span> district,</span>
<span id="cb14-4"><a href="#cb14-4" aria-hidden="true" tabindex="-1"></a> <span class="at">var =</span> <span class="fu">c</span>(<span class="st">"T_POP"</span>, <span class="st">"DENS"</span>),</span>
<span id="cb14-5"><a href="#cb14-5" aria-hidden="true" tabindex="-1"></a> <span class="at">val_max =</span> <span class="dv">500000</span>,</span>
<span id="cb14-6"><a href="#cb14-6" aria-hidden="true" tabindex="-1"></a> <span class="at">type =</span> <span class="st">"prop_choro"</span>,</span>
<span id="cb14-7"><a href="#cb14-7" aria-hidden="true" tabindex="-1"></a> <span class="at">border =</span> <span class="st">"grey60"</span>,</span>
<span id="cb14-8"><a href="#cb14-8" aria-hidden="true" tabindex="-1"></a> <span class="at">lwd =</span> <span class="fl">0.5</span>,</span>
<span id="cb14-9"><a href="#cb14-9" aria-hidden="true" tabindex="-1"></a> <span class="at">leg_pos =</span> <span class="fu">c</span>(<span class="st">"bottomright"</span>, <span class="st">"bottomleft"</span>),</span>
<span id="cb14-10"><a href="#cb14-10" aria-hidden="true" tabindex="-1"></a> <span class="at">leg_title =</span> <span class="fu">c</span>(<span class="st">"Population"</span>, <span class="st">"Density of</span><span class="sc">\n</span><span class="st"> population</span><span class="sc">\n</span><span class="st">(inhabitants per km2)"</span>),</span>
<span id="cb14-11"><a href="#cb14-11" aria-hidden="true" tabindex="-1"></a> <span class="at">breaks =</span> <span class="st">"q6"</span>,</span>
<span id="cb14-12"><a href="#cb14-12" aria-hidden="true" tabindex="-1"></a> <span class="at">pal =</span> <span class="st">"Blues 3"</span>,</span>
<span id="cb14-13"><a href="#cb14-13" aria-hidden="true" tabindex="-1"></a> <span class="at">leg_val_rnd =</span> <span class="fu">c</span>(<span class="dv">0</span>,<span class="dv">1</span>))</span>
<span id="cb14-14"><a href="#cb14-14" aria-hidden="true" tabindex="-1"></a><span class="fu">mf_title</span>(<span class="st">"Population"</span>)</span></code><button title="Copy to Clipboard" class="code-copy-button"><i class="bi"></i></button></pre></div>
<div class="cell-output-display">
<p><img src="05-mapping_with_r_files/figure-html/choroprop-1.png" class="img-fluid" width="672"></p>
</div>
</div>
</section>
<section id="map-of-stocks-and-categories" class="level3" data-number="5.1.7">
<h3 data-number="5.1.7" class="anchored" data-anchor-id="map-of-stocks-and-categories"><span class="header-section-number">5.1.7</span> Map of stocks and categories</h3>
<p>The function <code>mf_map(..., var = c("var1", "var2"), type = "prop_typo")</code> represents proportional symbols whose areas are proportional to the values of one variable and whose color is based on the discretization of a second variable. The function uses the arguments of the <code>mf_map(..., type = "prop")</code> and function <code>mf_map(..., type = "typo")</code>.</p>
<div class="cell">
<div class="sourceCode cell-code" id="cb15"><pre class="sourceCode r code-with-copy"><code class="sourceCode r"><span id="cb15-1"><a href="#cb15-1" aria-hidden="true" tabindex="-1"></a><span class="fu">mf_map</span>(<span class="at">x =</span> district)</span>
<span id="cb15-2"><a href="#cb15-2" aria-hidden="true" tabindex="-1"></a><span class="fu">mf_map</span>(</span>
<span id="cb15-3"><a href="#cb15-3" aria-hidden="true" tabindex="-1"></a> <span class="at">x =</span> district,</span>
<span id="cb15-4"><a href="#cb15-4" aria-hidden="true" tabindex="-1"></a> <span class="at">var =</span> <span class="fu">c</span>(<span class="st">"Area.Km2."</span>, <span class="st">"Status"</span>),</span>
<span id="cb15-5"><a href="#cb15-5" aria-hidden="true" tabindex="-1"></a> <span class="at">type =</span> <span class="st">"prop_typo"</span>,</span>
<span id="cb15-6"><a href="#cb15-6" aria-hidden="true" tabindex="-1"></a> <span class="at">pal =</span> <span class="fu">c</span>(<span class="st">'#E8F9FD'</span>,<span class="st">'#FF7396'</span>,<span class="st">'#E4BAD4'</span>,<span class="st">'#FFE3FE'</span>),</span>
<span id="cb15-7"><a href="#cb15-7" aria-hidden="true" tabindex="-1"></a> <span class="at">val_order =</span> <span class="fu">c</span>(<span class="st">"<4500km2"</span>,<span class="st">"1st largest district"</span>, <span class="st">"2nd largest district"</span>, <span class="st">"3rd largest district"</span>),</span>
<span id="cb15-8"><a href="#cb15-8" aria-hidden="true" tabindex="-1"></a> <span class="at">leg_pos =</span> <span class="fu">c</span>(<span class="st">"bottomleft"</span>,<span class="st">"topleft"</span>),</span>
<span id="cb15-9"><a href="#cb15-9" aria-hidden="true" tabindex="-1"></a> <span class="at">leg_title =</span> <span class="fu">c</span>(<span class="st">"Population</span><span class="sc">\n</span><span class="st">(2019)"</span>,</span>
<span id="cb15-10"><a href="#cb15-10" aria-hidden="true" tabindex="-1"></a> <span class="st">"Statut administratif"</span>),</span>
<span id="cb15-11"><a href="#cb15-11" aria-hidden="true" tabindex="-1"></a>)</span>
<span id="cb15-12"><a href="#cb15-12" aria-hidden="true" tabindex="-1"></a><span class="fu">mf_title</span>(<span class="st">"Population"</span>)</span></code><button title="Copy to Clipboard" class="code-copy-button"><i class="bi"></i></button></pre></div>
<div class="cell-output-display">
<p><img src="05-mapping_with_r_files/figure-html/typoprop-1.png" class="img-fluid" width="672"></p>
</div>
</div>
</section>
</section>
<section id="layout" class="level2" data-number="5.2">
<h2 data-number="5.2" class="anchored" data-anchor-id="layout"><span class="header-section-number">5.2</span> Layout</h2>
<p>To be finalized, a thematic map must contain certain additional elements such as: title, author, source, scale, orientation…</p>
<section id="example-data-1" class="level3" data-number="5.2.1">
<h3 data-number="5.2.1" class="anchored" data-anchor-id="example-data-1"><span class="header-section-number">5.2.1</span> Example data</h3>
<p>The following lines import the spatial information layers located in the <a href="https://www.geopackage.org/">geopackage</a> <strong>lot46.gpkg</strong> file.</p>
<div class="cell">
<div class="sourceCode cell-code" id="cb16"><pre class="sourceCode r code-with-copy"><code class="sourceCode r"><span id="cb16-1"><a href="#cb16-1" aria-hidden="true" tabindex="-1"></a><span class="fu">library</span>(sf)</span>
<span id="cb16-2"><a href="#cb16-2" aria-hidden="true" tabindex="-1"></a>country <span class="ot">=</span> <span class="fu">st_read</span>(<span class="st">"data_cambodia/cambodia.gpkg"</span>, <span class="at">layer =</span> <span class="st">"country"</span>, <span class="at">quiet =</span> <span class="cn">TRUE</span>) <span class="co">#Import Cambodia country border</span></span>
<span id="cb16-3"><a href="#cb16-3" aria-hidden="true" tabindex="-1"></a>education <span class="ot">=</span> <span class="fu">st_read</span>(<span class="st">"data_cambodia/cambodia.gpkg"</span>, <span class="at">layer =</span> <span class="st">"education"</span>, <span class="at">quiet =</span> <span class="cn">TRUE</span>) <span class="co">#Import provincial administrative border of Cambodia</span></span>
<span id="cb16-4"><a href="#cb16-4" aria-hidden="true" tabindex="-1"></a>district <span class="ot">=</span> <span class="fu">st_read</span>(<span class="st">"data_cambodia/cambodia.gpkg"</span>, <span class="at">layer =</span> <span class="st">"district"</span>, <span class="at">quiet =</span> <span class="cn">TRUE</span>) <span class="co">#Import district administrative border of Cambodia</span></span>
<span id="cb16-5"><a href="#cb16-5" aria-hidden="true" tabindex="-1"></a>road <span class="ot">=</span> <span class="fu">st_read</span>(<span class="st">"data_cambodia/cambodia.gpkg"</span>, <span class="at">layer =</span> <span class="st">"road"</span>, <span class="at">quiet =</span> <span class="cn">TRUE</span>) <span class="co">#Import roads data in Cambodia</span></span>
<span id="cb16-6"><a href="#cb16-6" aria-hidden="true" tabindex="-1"></a>hospital <span class="ot">=</span> <span class="fu">st_read</span>(<span class="st">"data_cambodia/cambodia.gpkg"</span>, <span class="at">layer =</span> <span class="st">"hospital"</span>, <span class="at">quiet =</span> <span class="cn">TRUE</span>) <span class="co">#Import hospital data in Cambodia</span></span>
<span id="cb16-7"><a href="#cb16-7" aria-hidden="true" tabindex="-1"></a>cases <span class="ot">=</span> <span class="fu">st_read</span>(<span class="st">"data_cambodia/cambodia.gpkg"</span>, <span class="at">layer =</span> <span class="st">"cases"</span>, <span class="at">quiet =</span> <span class="cn">TRUE</span>) <span class="co">#Import example data of fever_cases in Cambodia</span></span></code><button title="Copy to Clipboard" class="code-copy-button"><i class="bi"></i></button></pre></div>
</div>
</section>
<section id="themes" class="level3" data-number="5.2.2">
<h3 data-number="5.2.2" class="anchored" data-anchor-id="themes"><span class="header-section-number">5.2.2</span> Themes</h3>
<p>The function <code>mf_theme()</code> defines a cartographic theme. Using a theme allows you to define several graphic parameters which are then applied to the maps created with <code>mapsf</code>. These parameters are: the map margins, the main color, the background color, the position and the aspect of the title. A theme can also be defined with the <code>mf_init()</code> and function <code>mf_export()</code>.</p>
<section id="use-a-predefined-theme" class="level4" data-number="5.2.2.1">
<h4 data-number="5.2.2.1" class="anchored" data-anchor-id="use-a-predefined-theme"><span class="header-section-number">5.2.2.1</span> Use a predefined theme</h4>
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<p>A series of predefined themes are available by default (see <code>?mf_theme</code>).</p>
<div class="cell">
<div class="sourceCode cell-code" id="cb17"><pre class="sourceCode r code-with-copy"><code class="sourceCode r"><span id="cb17-1"><a href="#cb17-1" aria-hidden="true" tabindex="-1"></a><span class="fu">library</span>(mapsf)</span>
<span id="cb17-2"><a href="#cb17-2" aria-hidden="true" tabindex="-1"></a><span class="co"># use of a background color for the figure, to see the use of margin</span></span>
<span id="cb17-3"><a href="#cb17-3" aria-hidden="true" tabindex="-1"></a>opar <span class="ot"><-</span> <span class="fu">par</span>(<span class="at">mfrow =</span> <span class="fu">c</span>(<span class="dv">2</span>,<span class="dv">2</span>))</span>
<span id="cb17-4"><a href="#cb17-4" aria-hidden="true" tabindex="-1"></a><span class="co"># Using a predefined theme</span></span>
<span id="cb17-5"><a href="#cb17-5" aria-hidden="true" tabindex="-1"></a><span class="fu">mf_theme</span>(<span class="st">"default"</span>)</span>
<span id="cb17-6"><a href="#cb17-6" aria-hidden="true" tabindex="-1"></a><span class="fu">mf_map</span>(district)</span>
<span id="cb17-7"><a href="#cb17-7" aria-hidden="true" tabindex="-1"></a><span class="fu">mf_title</span>(<span class="st">"Theme : 'default'"</span>)</span>
<span id="cb17-8"><a href="#cb17-8" aria-hidden="true" tabindex="-1"></a></span>
<span id="cb17-9"><a href="#cb17-9" aria-hidden="true" tabindex="-1"></a><span class="fu">mf_theme</span>(<span class="st">"darkula"</span>)</span>
<span id="cb17-10"><a href="#cb17-10" aria-hidden="true" tabindex="-1"></a><span class="fu">mf_map</span>(district)</span>
<span id="cb17-11"><a href="#cb17-11" aria-hidden="true" tabindex="-1"></a><span class="fu">mf_title</span>(<span class="st">"Theme : 'darkula'"</span>)</span>
<span id="cb17-12"><a href="#cb17-12" aria-hidden="true" tabindex="-1"></a></span>
<span id="cb17-13"><a href="#cb17-13" aria-hidden="true" tabindex="-1"></a><span class="fu">mf_theme</span>(<span class="st">"candy"</span>)</span>
<span id="cb17-14"><a href="#cb17-14" aria-hidden="true" tabindex="-1"></a><span class="fu">mf_map</span>(district)</span>
<span id="cb17-15"><a href="#cb17-15" aria-hidden="true" tabindex="-1"></a><span class="fu">mf_title</span>(<span class="st">"Theme : 'candy'"</span>)</span>
<span id="cb17-16"><a href="#cb17-16" aria-hidden="true" tabindex="-1"></a></span>
<span id="cb17-17"><a href="#cb17-17" aria-hidden="true" tabindex="-1"></a><span class="fu">mf_theme</span>(<span class="st">"nevermind"</span>)</span>
<span id="cb17-18"><a href="#cb17-18" aria-hidden="true" tabindex="-1"></a><span class="fu">mf_map</span>(district)</span>
<span id="cb17-19"><a href="#cb17-19" aria-hidden="true" tabindex="-1"></a><span class="fu">mf_title</span>(<span class="st">"Theme : 'nevermind'"</span>)</span>
<span id="cb17-20"><a href="#cb17-20" aria-hidden="true" tabindex="-1"></a><span class="fu">par</span>(opar)</span></code><button title="Copy to Clipboard" class="code-copy-button"><i class="bi"></i></button></pre></div>
<div class="cell-output-display">
<p><img src="05-mapping_with_r_files/figure-html/them1-1.png" class="img-fluid" width="768"></p>
</div>
</div>
</section>
<section id="modify-an-existing-theme" class="level4" data-number="5.2.2.2">
<h4 data-number="5.2.2.2" class="anchored" data-anchor-id="modify-an-existing-theme"><span class="header-section-number">5.2.2.2</span> Modify an existing theme</h4>
<p>It is possible to modify an existing theme. In this example, we are using the “default” theme and modifying a few settings.</p>
<div class="cell">
<div class="sourceCode cell-code" id="cb18"><pre class="sourceCode r code-with-copy"><code class="sourceCode r"><span id="cb18-1"><a href="#cb18-1" aria-hidden="true" tabindex="-1"></a><span class="fu">library</span>(mapsf)</span>
<span id="cb18-2"><a href="#cb18-2" aria-hidden="true" tabindex="-1"></a>opar <span class="ot"><-</span> <span class="fu">par</span>(<span class="at">mfrow =</span> <span class="fu">c</span>(<span class="dv">1</span>,<span class="dv">2</span>))</span>
<span id="cb18-3"><a href="#cb18-3" aria-hidden="true" tabindex="-1"></a><span class="fu">mf_theme</span>(<span class="st">"default"</span>)</span>
<span id="cb18-4"><a href="#cb18-4" aria-hidden="true" tabindex="-1"></a><span class="fu">mf_map</span>(district)</span>
<span id="cb18-5"><a href="#cb18-5" aria-hidden="true" tabindex="-1"></a><span class="fu">mf_title</span>(<span class="st">"default"</span>)</span>
<span id="cb18-6"><a href="#cb18-6" aria-hidden="true" tabindex="-1"></a></span>
<span id="cb18-7"><a href="#cb18-7" aria-hidden="true" tabindex="-1"></a><span class="fu">mf_theme</span>(<span class="st">"default"</span>, <span class="at">tab =</span> <span class="cn">FALSE</span>, <span class="at">font =</span> <span class="dv">4</span>, <span class="at">bg =</span> <span class="st">"grey60"</span>, <span class="at">pos =</span> <span class="st">"center"</span>)</span>
<span id="cb18-8"><a href="#cb18-8" aria-hidden="true" tabindex="-1"></a><span class="fu">mf_map</span>(district)</span>
<span id="cb18-9"><a href="#cb18-9" aria-hidden="true" tabindex="-1"></a><span class="fu">mf_title</span>(<span class="st">"modified default"</span>)</span>
<span id="cb18-10"><a href="#cb18-10" aria-hidden="true" tabindex="-1"></a><span class="fu">par</span>(opar)</span></code><button title="Copy to Clipboard" class="code-copy-button"><i class="bi"></i></button></pre></div>
<div class="cell-output-display">
<p><img src="05-mapping_with_r_files/figure-html/theme2-1.png" class="img-fluid" width="768"></p>
</div>
</div>
</section>
<section id="create-a-theme" class="level4" data-number="5.2.2.3">
<h4 data-number="5.2.2.3" class="anchored" data-anchor-id="create-a-theme"><span class="header-section-number">5.2.2.3</span> Create a theme</h4>
<p>It is also possible to create a theme.</p>
<div class="cell">
<div class="sourceCode cell-code" id="cb19"><pre class="sourceCode r code-with-copy"><code class="sourceCode r"><span id="cb19-1"><a href="#cb19-1" aria-hidden="true" tabindex="-1"></a><span class="fu">mf_theme</span>(</span>
<span id="cb19-2"><a href="#cb19-2" aria-hidden="true" tabindex="-1"></a> <span class="at">bg =</span> <span class="st">"lightblue"</span>, <span class="co"># background color</span></span>
<span id="cb19-3"><a href="#cb19-3" aria-hidden="true" tabindex="-1"></a> <span class="at">fg =</span> <span class="st">"tomato1"</span>, <span class="co"># main color</span></span>
<span id="cb19-4"><a href="#cb19-4" aria-hidden="true" tabindex="-1"></a> <span class="at">mar =</span> <span class="fu">c</span>(<span class="dv">1</span>,<span class="dv">0</span>,<span class="fl">1.5</span>,<span class="dv">0</span>), <span class="co"># margin</span></span>
<span id="cb19-5"><a href="#cb19-5" aria-hidden="true" tabindex="-1"></a> <span class="at">tab =</span> <span class="cn">FALSE</span>, <span class="co"># "tab" style for the title</span></span>
<span id="cb19-6"><a href="#cb19-6" aria-hidden="true" tabindex="-1"></a> <span class="at">inner =</span> <span class="cn">FALSE</span>, <span class="co"># title inside or outside of map area</span></span>
<span id="cb19-7"><a href="#cb19-7" aria-hidden="true" tabindex="-1"></a> <span class="at">line =</span> <span class="fl">1.5</span>, <span class="co"># space dedicated to title</span></span>
<span id="cb19-8"><a href="#cb19-8" aria-hidden="true" tabindex="-1"></a> <span class="at">pos =</span> <span class="st">"center"</span>, <span class="co"># heading position</span></span>
<span id="cb19-9"><a href="#cb19-9" aria-hidden="true" tabindex="-1"></a> <span class="at">cex =</span> <span class="fl">1.5</span>, <span class="co"># title size</span></span>
<span id="cb19-10"><a href="#cb19-10" aria-hidden="true" tabindex="-1"></a> <span class="at">font =</span> <span class="dv">2</span> <span class="co"># font types for title</span></span>
<span id="cb19-11"><a href="#cb19-11" aria-hidden="true" tabindex="-1"></a>)</span>
<span id="cb19-12"><a href="#cb19-12" aria-hidden="true" tabindex="-1"></a><span class="fu">mf_map</span>(district)</span>
<span id="cb19-13"><a href="#cb19-13" aria-hidden="true" tabindex="-1"></a><span class="fu">mf_title</span>(<span class="st">"New theme"</span>)</span></code><button title="Copy to Clipboard" class="code-copy-button"><i class="bi"></i></button></pre></div>
<div class="cell-output-display">
<p><img src="05-mapping_with_r_files/figure-html/unnamed-chunk-4-1.png" class="img-fluid" width="672"></p>
</div>
</div>
</section>
</section>
<section id="titles" class="level3" data-number="5.2.3">
<h3 data-number="5.2.3" class="anchored" data-anchor-id="titles"><span class="header-section-number">5.2.3</span> Titles</h3>
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<p>The function <code>mf_title()</code> adds a title to a map.</p>
<div class="cell">
<div class="sourceCode cell-code" id="cb20"><pre class="sourceCode r code-with-copy"><code class="sourceCode r"><span id="cb20-1"><a href="#cb20-1" aria-hidden="true" tabindex="-1"></a><span class="fu">mf_theme</span>(<span class="st">"default"</span>)</span>
<span id="cb20-2"><a href="#cb20-2" aria-hidden="true" tabindex="-1"></a><span class="fu">mf_map</span>(district)</span>
<span id="cb20-3"><a href="#cb20-3" aria-hidden="true" tabindex="-1"></a><span class="fu">mf_title</span>(<span class="st">"Map title"</span>)</span></code><button title="Copy to Clipboard" class="code-copy-button"><i class="bi"></i></button></pre></div>
<div class="cell-output-display">
<p><img src="05-mapping_with_r_files/figure-html/unnamed-chunk-5-1.png" class="img-fluid" width="672"></p>
</div>
</div>
<p>It is possible to customize the appearance of the title</p>
<div class="cell">
<div class="sourceCode cell-code" id="cb21"><pre class="sourceCode r code-with-copy"><code class="sourceCode r"><span id="cb21-1"><a href="#cb21-1" aria-hidden="true" tabindex="-1"></a><span class="fu">mf_map</span>(district)</span>
<span id="cb21-2"><a href="#cb21-2" aria-hidden="true" tabindex="-1"></a><span class="fu">mf_title</span>(</span>
<span id="cb21-3"><a href="#cb21-3" aria-hidden="true" tabindex="-1"></a> <span class="at">txt =</span> <span class="st">"Map title"</span>, </span>
<span id="cb21-4"><a href="#cb21-4" aria-hidden="true" tabindex="-1"></a> <span class="at">pos =</span> <span class="st">"center"</span>, </span>
<span id="cb21-5"><a href="#cb21-5" aria-hidden="true" tabindex="-1"></a> <span class="at">tab =</span> <span class="cn">FALSE</span>, </span>
<span id="cb21-6"><a href="#cb21-6" aria-hidden="true" tabindex="-1"></a> <span class="at">bg =</span> <span class="st">"tomato3"</span>, </span>
<span id="cb21-7"><a href="#cb21-7" aria-hidden="true" tabindex="-1"></a> <span class="at">fg =</span> <span class="st">"lightblue"</span>, </span>
<span id="cb21-8"><a href="#cb21-8" aria-hidden="true" tabindex="-1"></a> <span class="at">cex =</span> <span class="fl">1.5</span>, </span>
<span id="cb21-9"><a href="#cb21-9" aria-hidden="true" tabindex="-1"></a> <span class="at">line =</span> <span class="fl">1.7</span>, </span>
<span id="cb21-10"><a href="#cb21-10" aria-hidden="true" tabindex="-1"></a> <span class="at">font =</span> <span class="dv">1</span>, </span>
<span id="cb21-11"><a href="#cb21-11" aria-hidden="true" tabindex="-1"></a> <span class="at">inner =</span> <span class="cn">FALSE</span></span>
<span id="cb21-12"><a href="#cb21-12" aria-hidden="true" tabindex="-1"></a>)</span></code><button title="Copy to Clipboard" class="code-copy-button"><i class="bi"></i></button></pre></div>
<div class="cell-output-display">
<p><img src="05-mapping_with_r_files/figure-html/unnamed-chunk-6-1.png" class="img-fluid" width="672"></p>
</div>
</div>
</section>
<section id="arrow-orientation" class="level3" data-number="5.2.4">
<h3 data-number="5.2.4" class="anchored" data-anchor-id="arrow-orientation"><span class="header-section-number">5.2.4</span> Arrow orientation</h3>
<p>The function <code>mf_arrow()</code> allows you to choose the position and aspect of orientation arrow.</p>
<div class="cell">
<div class="sourceCode cell-code" id="cb22"><pre class="sourceCode r code-with-copy"><code class="sourceCode r"><span id="cb22-1"><a href="#cb22-1" aria-hidden="true" tabindex="-1"></a><span class="fu">mf_map</span>(district)</span>
<span id="cb22-2"><a href="#cb22-2" aria-hidden="true" tabindex="-1"></a><span class="fu">mf_arrow</span>()</span></code><button title="Copy to Clipboard" class="code-copy-button"><i class="bi"></i></button></pre></div>
<div class="cell-output-display">
<p><img src="05-mapping_with_r_files/figure-html/north-1.png" class="img-fluid" width="672"></p>
</div>
</div>
</section>
<section id="scale" class="level3" data-number="5.2.5">
<h3 data-number="5.2.5" class="anchored" data-anchor-id="scale"><span class="header-section-number">5.2.5</span> Scale</h3>
<p>The function <code>mf_scale()</code> allows you to choose the position and the aspect of the scale.</p>
<div class="cell">
<div class="sourceCode cell-code" id="cb23"><pre class="sourceCode r code-with-copy"><code class="sourceCode r"><span id="cb23-1"><a href="#cb23-1" aria-hidden="true" tabindex="-1"></a><span class="fu">mf_map</span>(district)</span>
<span id="cb23-2"><a href="#cb23-2" aria-hidden="true" tabindex="-1"></a><span class="fu">mf_scale</span>(</span>
<span id="cb23-3"><a href="#cb23-3" aria-hidden="true" tabindex="-1"></a> <span class="at">size =</span> <span class="dv">60</span>,</span>
<span id="cb23-4"><a href="#cb23-4" aria-hidden="true" tabindex="-1"></a> <span class="at">lwd =</span> <span class="dv">1</span>,</span>
<span id="cb23-5"><a href="#cb23-5" aria-hidden="true" tabindex="-1"></a> <span class="at">cex =</span> <span class="fl">0.7</span></span>
<span id="cb23-6"><a href="#cb23-6" aria-hidden="true" tabindex="-1"></a>)</span></code><button title="Copy to Clipboard" class="code-copy-button"><i class="bi"></i></button></pre></div>
<div class="cell-output-display">
<p><img src="05-mapping_with_r_files/figure-html/scale-1.png" class="img-fluid" width="672"></p>
</div>
</div>
</section>
<section id="credits" class="level3" data-number="5.2.6">
<h3 data-number="5.2.6" class="anchored" data-anchor-id="credits"><span class="header-section-number">5.2.6</span> Credits</h3>
<p>The function <code>mf_credits()</code> displays a line of credits (sources, author, etc.).</p>
<div class="cell">
<div class="sourceCode cell-code" id="cb24"><pre class="sourceCode r code-with-copy"><code class="sourceCode r"><span id="cb24-1"><a href="#cb24-1" aria-hidden="true" tabindex="-1"></a><span class="fu">mf_map</span>(district)</span>
<span id="cb24-2"><a href="#cb24-2" aria-hidden="true" tabindex="-1"></a><span class="fu">mf_credits</span>(<span class="st">"IRD</span><span class="sc">\n</span><span class="st">Institut Pasteur du Cambodge, 2022"</span>)</span></code><button title="Copy to Clipboard" class="code-copy-button"><i class="bi"></i></button></pre></div>
<div class="cell-output-display">
<p><img src="05-mapping_with_r_files/figure-html/credit-1.png" class="img-fluid" width="672"></p>
</div>
</div>
</section>
<section id="complete-dressing" class="level3" data-number="5.2.7">
<h3 data-number="5.2.7" class="anchored" data-anchor-id="complete-dressing"><span class="header-section-number">5.2.7</span> Complete dressing</h3>
<p>The function <code>mf_layout()</code> displays all these elements.</p>
<div class="cell">
<div class="sourceCode cell-code" id="cb25"><pre class="sourceCode r code-with-copy"><code class="sourceCode r"><span id="cb25-1"><a href="#cb25-1" aria-hidden="true" tabindex="-1"></a><span class="fu">mf_map</span>(district)</span>
<span id="cb25-2"><a href="#cb25-2" aria-hidden="true" tabindex="-1"></a><span class="fu">mf_layout</span>(</span>
<span id="cb25-3"><a href="#cb25-3" aria-hidden="true" tabindex="-1"></a> <span class="at">title =</span> <span class="st">"Cambodia"</span>,</span>
<span id="cb25-4"><a href="#cb25-4" aria-hidden="true" tabindex="-1"></a> <span class="at">credits =</span> <span class="st">"IRD</span><span class="sc">\n</span><span class="st">Institut Pasteur du Cambodge, 2022"</span>,</span>
<span id="cb25-5"><a href="#cb25-5" aria-hidden="true" tabindex="-1"></a> <span class="at">arrow =</span> <span class="cn">TRUE</span></span>
<span id="cb25-6"><a href="#cb25-6" aria-hidden="true" tabindex="-1"></a>)</span></code><button title="Copy to Clipboard" class="code-copy-button"><i class="bi"></i></button></pre></div>
<div class="cell-output-display">
<p><img src="05-mapping_with_r_files/figure-html/layout1-1.png" class="img-fluid" width="672"></p>
</div>
</div>
</section>
<section id="annotations" class="level3" data-number="5.2.8">
<h3 data-number="5.2.8" class="anchored" data-anchor-id="annotations"><span class="header-section-number">5.2.8</span> Annotations</h3>
<div class="cell">
<div class="sourceCode cell-code" id="cb26"><pre class="sourceCode r code-with-copy"><code class="sourceCode r"><span id="cb26-1"><a href="#cb26-1" aria-hidden="true" tabindex="-1"></a><span class="fu">mf_map</span>(district)</span>
<span id="cb26-2"><a href="#cb26-2" aria-hidden="true" tabindex="-1"></a><span class="fu">mf_annotation</span>(district[district<span class="sc">$</span>ADM2_EN <span class="sc">==</span> <span class="st">"Bakan"</span>,], <span class="at">txt =</span> <span class="st">"Bakan"</span>, <span class="at">col_txt =</span> <span class="st">"darkred"</span>, <span class="at">halo =</span> <span class="cn">TRUE</span>, <span class="at">cex =</span> <span class="fl">1.5</span>)</span></code><button title="Copy to Clipboard" class="code-copy-button"><i class="bi"></i></button></pre></div>
<div class="cell-output-display">
<p><img src="05-mapping_with_r_files/figure-html/unnamed-chunk-7-1.png" class="img-fluid" width="672"></p>
</div>
</div>
</section>
<section id="legends" class="level3" data-number="5.2.9">
<h3 data-number="5.2.9" class="anchored" data-anchor-id="legends"><span class="header-section-number">5.2.9</span> Legends</h3>
<div class="cell">
<div class="sourceCode cell-code" id="cb27"><pre class="sourceCode r code-with-copy"><code class="sourceCode r"><span id="cb27-1"><a href="#cb27-1" aria-hidden="true" tabindex="-1"></a><span class="fu">mf_map</span>(district)</span>
<span id="cb27-2"><a href="#cb27-2" aria-hidden="true" tabindex="-1"></a><span class="fu">mf_legend</span>(</span>
<span id="cb27-3"><a href="#cb27-3" aria-hidden="true" tabindex="-1"></a> <span class="at">type =</span> <span class="st">"prop"</span>, </span>
<span id="cb27-4"><a href="#cb27-4" aria-hidden="true" tabindex="-1"></a> <span class="at">val =</span> <span class="fu">c</span>(<span class="dv">1000</span>,<span class="dv">500</span>,<span class="dv">200</span>,<span class="dv">10</span>), </span>
<span id="cb27-5"><a href="#cb27-5" aria-hidden="true" tabindex="-1"></a> <span class="at">inches =</span> .<span class="dv">2</span>, </span>
<span id="cb27-6"><a href="#cb27-6" aria-hidden="true" tabindex="-1"></a> <span class="at">title =</span> <span class="st">"Population"</span>, </span>
<span id="cb27-7"><a href="#cb27-7" aria-hidden="true" tabindex="-1"></a> <span class="at">pos =</span> <span class="st">"topleft"</span></span>
<span id="cb27-8"><a href="#cb27-8" aria-hidden="true" tabindex="-1"></a>)</span>
<span id="cb27-9"><a href="#cb27-9" aria-hidden="true" tabindex="-1"></a><span class="fu">mf_legend</span>(</span>
<span id="cb27-10"><a href="#cb27-10" aria-hidden="true" tabindex="-1"></a> <span class="at">type =</span> <span class="st">"choro"</span>, </span>
<span id="cb27-11"><a href="#cb27-11" aria-hidden="true" tabindex="-1"></a> <span class="at">val =</span> <span class="fu">c</span>(<span class="dv">0</span>,<span class="dv">10</span>,<span class="dv">20</span>,<span class="dv">30</span>,<span class="dv">40</span>),</span>
<span id="cb27-12"><a href="#cb27-12" aria-hidden="true" tabindex="-1"></a> <span class="at">pal =</span> <span class="st">"Greens"</span>, </span>
<span id="cb27-13"><a href="#cb27-13" aria-hidden="true" tabindex="-1"></a> <span class="at">pos =</span> <span class="st">"bottomright"</span>, </span>
<span id="cb27-14"><a href="#cb27-14" aria-hidden="true" tabindex="-1"></a> <span class="at">val_rnd =</span> <span class="dv">0</span></span>
<span id="cb27-15"><a href="#cb27-15" aria-hidden="true" tabindex="-1"></a>)</span></code><button title="Copy to Clipboard" class="code-copy-button"><i class="bi"></i></button></pre></div>
<div class="cell-output-display">
<p><img src="05-mapping_with_r_files/figure-html/unnamed-chunk-8-1.png" class="img-fluid" width="672"></p>
</div>
</div>
</section>
<section id="labels" class="level3" data-number="5.2.10">
<h3 data-number="5.2.10" class="anchored" data-anchor-id="labels"><span class="header-section-number">5.2.10</span> Labels</h3>
<p>The function <code>mf_label()</code> is dedicated to displaying labels.</p>
<div class="cell">
<div class="sourceCode cell-code" id="cb28"><pre class="sourceCode r code-with-copy"><code class="sourceCode r"><span id="cb28-1"><a href="#cb28-1" aria-hidden="true" tabindex="-1"></a>dist_selected <span class="ot"><-</span> district[<span class="fu">st_intersects</span>(district, district[district<span class="sc">$</span>ADM2_EN <span class="sc">==</span> <span class="st">"Bakan"</span>, ], <span class="at">sparse =</span> F), ]</span>
<span id="cb28-2"><a href="#cb28-2" aria-hidden="true" tabindex="-1"></a></span>
<span id="cb28-3"><a href="#cb28-3" aria-hidden="true" tabindex="-1"></a><span class="fu">mf_map</span>(dist_selected)</span>
<span id="cb28-4"><a href="#cb28-4" aria-hidden="true" tabindex="-1"></a><span class="fu">mf_label</span>(</span>
<span id="cb28-5"><a href="#cb28-5" aria-hidden="true" tabindex="-1"></a> <span class="at">x =</span> dist_selected,</span>
<span id="cb28-6"><a href="#cb28-6" aria-hidden="true" tabindex="-1"></a> <span class="at">var =</span> <span class="st">"ADM2_EN"</span>,</span>
<span id="cb28-7"><a href="#cb28-7" aria-hidden="true" tabindex="-1"></a> <span class="at">col=</span> <span class="st">"darkgreen"</span>,</span>
<span id="cb28-8"><a href="#cb28-8" aria-hidden="true" tabindex="-1"></a> <span class="at">halo =</span> <span class="cn">TRUE</span>,</span>
<span id="cb28-9"><a href="#cb28-9" aria-hidden="true" tabindex="-1"></a> <span class="at">overlap =</span> <span class="cn">FALSE</span>, </span>
<span id="cb28-10"><a href="#cb28-10" aria-hidden="true" tabindex="-1"></a> <span class="at">lines =</span> <span class="cn">FALSE</span></span>
<span id="cb28-11"><a href="#cb28-11" aria-hidden="true" tabindex="-1"></a>)</span>
<span id="cb28-12"><a href="#cb28-12" aria-hidden="true" tabindex="-1"></a><span class="fu">mf_scale</span>()</span></code><button title="Copy to Clipboard" class="code-copy-button"><i class="bi"></i></button></pre></div>
<div class="cell-output-display">
<p><img src="05-mapping_with_r_files/figure-html/labs-1.png" class="img-fluid" width="672"></p>
</div>
</div>
<p>The argument <code>halo = TRUE</code> allows to display a slight halo around the labels and the argument <code>overlap = FALSE</code> allows to create non-overlapping labels.</p>
</section>
<section id="center-the-map-on-a-region" class="level3" data-number="5.2.11">
<h3 data-number="5.2.11" class="anchored" data-anchor-id="center-the-map-on-a-region"><span class="header-section-number">5.2.11</span> Center the map on a region</h3>
<p>The function <code>mf_init()</code> allows you to initialize a map by centering it on a spatial object.</p>
<div class="cell">
<div class="sourceCode cell-code" id="cb29"><pre class="sourceCode r code-with-copy"><code class="sourceCode r"><span id="cb29-1"><a href="#cb29-1" aria-hidden="true" tabindex="-1"></a><span class="fu">mf_init</span>(<span class="at">x =</span> dist_selected)</span>
<span id="cb29-2"><a href="#cb29-2" aria-hidden="true" tabindex="-1"></a><span class="fu">mf_map</span>(district, <span class="at">add =</span> <span class="cn">TRUE</span>)</span>
<span id="cb29-3"><a href="#cb29-3" aria-hidden="true" tabindex="-1"></a><span class="fu">mf_map</span>(dist_selected, <span class="at">col =</span> <span class="cn">NA</span>, <span class="at">border =</span> <span class="st">"#29a3a3"</span>, <span class="at">lwd =</span> <span class="dv">2</span>, <span class="at">add =</span> <span class="cn">TRUE</span>)</span></code><button title="Copy to Clipboard" class="code-copy-button"><i class="bi"></i></button></pre></div>
<div class="cell-output-display">
<p><img src="05-mapping_with_r_files/figure-html/unnamed-chunk-9-1.png" class="img-fluid" width="672"></p>
</div>
</div>
</section>
<section id="displaying-several-maps-on-the-sam-figure" class="level3" data-number="5.2.12">
<h3 data-number="5.2.12" class="anchored" data-anchor-id="displaying-several-maps-on-the-sam-figure"><span class="header-section-number">5.2.12</span> Displaying several maps on the sam figure</h3>
<p>Here you have to use <code>mfrow</code> of the function <code>par()</code>. The first digit represents the number of of rows and second the number of columns.</p>
<div class="cell">
<div class="sourceCode cell-code" id="cb30"><pre class="sourceCode r code-with-copy"><code class="sourceCode r"><span id="cb30-1"><a href="#cb30-1" aria-hidden="true" tabindex="-1"></a><span class="co"># define the figure layout (1 row, 2 columns)</span></span>
<span id="cb30-2"><a href="#cb30-2" aria-hidden="true" tabindex="-1"></a><span class="fu">par</span>(<span class="at">mfrow =</span> <span class="fu">c</span>(<span class="dv">1</span>, <span class="dv">2</span>))</span>
<span id="cb30-3"><a href="#cb30-3" aria-hidden="true" tabindex="-1"></a></span>
<span id="cb30-4"><a href="#cb30-4" aria-hidden="true" tabindex="-1"></a><span class="co"># first map</span></span>
<span id="cb30-5"><a href="#cb30-5" aria-hidden="true" tabindex="-1"></a><span class="fu">mf_map</span>(district)</span>
<span id="cb30-6"><a href="#cb30-6" aria-hidden="true" tabindex="-1"></a><span class="fu">mf_map</span>(district, <span class="st">"Male"</span>, <span class="st">"prop"</span>, <span class="at">val_max =</span> <span class="dv">300000</span>)</span>
<span id="cb30-7"><a href="#cb30-7" aria-hidden="true" tabindex="-1"></a><span class="fu">mf_title</span>(<span class="st">"Population, male"</span>)</span>
<span id="cb30-8"><a href="#cb30-8" aria-hidden="true" tabindex="-1"></a></span>
<span id="cb30-9"><a href="#cb30-9" aria-hidden="true" tabindex="-1"></a><span class="co"># second map</span></span>
<span id="cb30-10"><a href="#cb30-10" aria-hidden="true" tabindex="-1"></a><span class="fu">mf_map</span>(district)</span>
<span id="cb30-11"><a href="#cb30-11" aria-hidden="true" tabindex="-1"></a><span class="fu">mf_map</span>(district, <span class="st">"Female"</span>, <span class="st">"prop"</span>, <span class="at">val_max =</span> <span class="dv">300000</span>)</span>
<span id="cb30-12"><a href="#cb30-12" aria-hidden="true" tabindex="-1"></a><span class="fu">mf_title</span>(<span class="st">"Population, female"</span>)</span></code><button title="Copy to Clipboard" class="code-copy-button"><i class="bi"></i></button></pre></div>
<div class="cell-output-display">
<p><img src="05-mapping_with_r_files/figure-html/mfrow0-1.png" class="img-fluid" width="672"></p>
</div>
</div>
</section>
<section id="exporting-maps" class="level3" data-number="5.2.13">
<h3 data-number="5.2.13" class="anchored" data-anchor-id="exporting-maps"><span class="header-section-number">5.2.13</span> Exporting maps</h3>
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<p>It is quite difficult to export figures (maps or others) whose height/width ratio is satisfactory. The default ratio of figures in png format is 1 (480x480 pixels):</p>
<div class="cell">
<div class="sourceCode cell-code" id="cb31"><pre class="sourceCode r code-with-copy"><code class="sourceCode r"><span id="cb31-1"><a href="#cb31-1" aria-hidden="true" tabindex="-1"></a>dist_filter <span class="ot"><-</span> district[district<span class="sc">$</span>ADM2_PCODE <span class="sc">==</span> <span class="st">"KH0808"</span>, ]</span>
<span id="cb31-2"><a href="#cb31-2" aria-hidden="true" tabindex="-1"></a><span class="fu">png</span>(<span class="st">"img/dist_filter_1.png"</span>)</span>
<span id="cb31-3"><a href="#cb31-3" aria-hidden="true" tabindex="-1"></a><span class="fu">mf_map</span>(dist_filter)</span>
<span id="cb31-4"><a href="#cb31-4" aria-hidden="true" tabindex="-1"></a><span class="fu">mf_title</span>(<span class="st">"Filtered district"</span>)</span>
<span id="cb31-5"><a href="#cb31-5" aria-hidden="true" tabindex="-1"></a><span class="fu">dev.off</span>()</span></code><button title="Copy to Clipboard" class="code-copy-button"><i class="bi"></i></button></pre></div>
</div>
<div class="quarto-figure quarto-figure-center">
<figure class="figure">
<p><img src="img/dist_filter_1.png" class="img-fluid figure-img"></p>
</figure>
</div>
<p>On this map a lot of space is lost to the left and right of the district.</p>
<p>The function <code>mf_export()</code> allows exports of maps whose height/width ratio is controlled and corresponds to that of a spatial object.</p>
<div class="cell">
<div class="sourceCode cell-code" id="cb32"><pre class="sourceCode r code-with-copy"><code class="sourceCode r"><span id="cb32-1"><a href="#cb32-1" aria-hidden="true" tabindex="-1"></a><span class="fu">mf_export</span>(dist_filter, <span class="st">"img/dist_filter_2.png"</span>, <span class="at">width =</span> <span class="dv">480</span>)</span>
<span id="cb32-2"><a href="#cb32-2" aria-hidden="true" tabindex="-1"></a><span class="fu">mf_map</span>(dist_filter)</span>
<span id="cb32-3"><a href="#cb32-3" aria-hidden="true" tabindex="-1"></a><span class="fu">mf_title</span>(<span class="st">"Filtered district"</span>)</span>
<span id="cb32-4"><a href="#cb32-4" aria-hidden="true" tabindex="-1"></a><span class="fu">dev.off</span>()</span></code><button title="Copy to Clipboard" class="code-copy-button"><i class="bi"></i></button></pre></div>
</div>
<div class="quarto-figure quarto-figure-center">
<figure class="figure">
<p><img src="img/dist_filter_2.png" class="img-fluid figure-img" width="218"></p>
</figure>
</div>
<p>The extent of this map is exactly that of the displayed region.</p>
</section>
<section id="adding-an-image-to-a-map" class="level3" data-number="5.2.14">
<h3 data-number="5.2.14" class="anchored" data-anchor-id="adding-an-image-to-a-map"><span class="header-section-number">5.2.14</span> Adding an image to a map</h3>
<p>This can be useful for adding a logo, a pictograph. The function <code>readPNG()</code> of package <code>png</code> allows the additional images on the figure.</p>
<div class="cell">
<div class="sourceCode cell-code" id="cb33"><pre class="sourceCode r code-with-copy"><code class="sourceCode r"><span id="cb33-1"><a href="#cb33-1" aria-hidden="true" tabindex="-1"></a><span class="fu">mf_theme</span>(<span class="st">"default"</span>, <span class="at">mar =</span> <span class="fu">c</span>(<span class="dv">0</span>,<span class="dv">0</span>,<span class="dv">0</span>,<span class="dv">0</span>))</span>
<span id="cb33-2"><a href="#cb33-2" aria-hidden="true" tabindex="-1"></a><span class="fu">library</span>(png)</span>
<span id="cb33-3"><a href="#cb33-3" aria-hidden="true" tabindex="-1"></a></span>
<span id="cb33-4"><a href="#cb33-4" aria-hidden="true" tabindex="-1"></a>logo <span class="ot"><-</span> <span class="fu">readPNG</span>(<span class="st">"img/ird_logo.png"</span>) <span class="co">#Import image</span></span>
<span id="cb33-5"><a href="#cb33-5" aria-hidden="true" tabindex="-1"></a>pp <span class="ot"><-</span> <span class="fu">dim</span>(logo)[<span class="dv">2</span><span class="sc">:</span><span class="dv">1</span>]<span class="sc">*</span><span class="dv">200</span> <span class="co">#Image dimension in map unit (width and height of the original image)</span></span>
<span id="cb33-6"><a href="#cb33-6" aria-hidden="true" tabindex="-1"></a></span>
<span id="cb33-7"><a href="#cb33-7" aria-hidden="true" tabindex="-1"></a><span class="co">#The upper left corner of the department's bounding box</span></span>
<span id="cb33-8"><a href="#cb33-8" aria-hidden="true" tabindex="-1"></a>xy <span class="ot"><-</span> <span class="fu">st_bbox</span>(district)[<span class="fu">c</span>(<span class="dv">1</span>,<span class="dv">4</span>)]</span>
<span id="cb33-9"><a href="#cb33-9" aria-hidden="true" tabindex="-1"></a><span class="fu">mf_map</span>(district, <span class="at">col =</span> <span class="st">"#D1914D"</span>, <span class="at">border =</span> <span class="st">"white"</span>)</span>
<span id="cb33-10"><a href="#cb33-10" aria-hidden="true" tabindex="-1"></a><span class="fu">rasterImage</span>(</span>
<span id="cb33-11"><a href="#cb33-11" aria-hidden="true" tabindex="-1"></a> <span class="at">image =</span> logo,</span>
<span id="cb33-12"><a href="#cb33-12" aria-hidden="true" tabindex="-1"></a> <span class="at">xleft =</span> xy[<span class="dv">1</span>] ,</span>
<span id="cb33-13"><a href="#cb33-13" aria-hidden="true" tabindex="-1"></a> <span class="at">ybottom =</span> xy[<span class="dv">2</span>] <span class="sc">-</span> pp[<span class="dv">2</span>],</span>
<span id="cb33-14"><a href="#cb33-14" aria-hidden="true" tabindex="-1"></a> <span class="at">xright =</span> xy[<span class="dv">1</span>] <span class="sc">+</span> pp[<span class="dv">1</span>],</span>
<span id="cb33-15"><a href="#cb33-15" aria-hidden="true" tabindex="-1"></a> <span class="at">ytop =</span> xy[<span class="dv">2</span>]</span>
<span id="cb33-16"><a href="#cb33-16" aria-hidden="true" tabindex="-1"></a>)</span></code><button title="Copy to Clipboard" class="code-copy-button"><i class="bi"></i></button></pre></div>
<div class="cell-output-display">
<p><img src="05-mapping_with_r_files/figure-html/logo-1.png" class="img-fluid" width="672"></p>
</div>
</div>
</section>
<section id="place-an-item-precisely-on-the-map" class="level3" data-number="5.2.15">
<h3 data-number="5.2.15" class="anchored" data-anchor-id="place-an-item-precisely-on-the-map"><span class="header-section-number">5.2.15</span> Place an item precisely on the map</h3>
<p>The function <code>locator()</code> allows clicking on the figure and obtaining the coordinate of a point in the coordinate system of the figure (of the map).</p>
<div class="cell">
<pre class="place cell-code"><code># locator(1) # click to get coordinate on map
# points(locator(1)) # click to plot point on map
# text(locator(1), # click to place the item on map
# labels ="Located any texts on map",
# adj = c(0,0))
</code></pre>
</div>
<p><video src="img/locator.webm" class="img-fluid" controls=""><a href="img/locator.webm">Video</a></video></p>
<p><code>locator()</code>peut être utilisée sur la plupart des graphiques (pas ceux produits avec <code>ggplot2</code>).</p>
<div class="callout-note callout callout-style-simple no-icon">
<div class="callout-body d-flex">
<div class="callout-icon-container">
<i class="callout-icon no-icon"></i>
</div>
<div class="callout-body-container">
<p><a href="https://rgeomatic.hypotheses.org/1837">How to interactively position legends and layout elements on a map with cartography</a></p>
</div>
</div>
</div>
</section>
<section id="add-shading-to-a-layer" class="level3" data-number="5.2.16">
<h3 data-number="5.2.16" class="anchored" data-anchor-id="add-shading-to-a-layer"><span class="header-section-number">5.2.16</span> Add shading to a layer</h3>
<p>The function <code>mf_shadow()</code> allows to create a shadow to a layer of polygons.</p>
<div class="cell">
<div class="sourceCode cell-code" id="cb35"><pre class="sourceCode r code-with-copy"><code class="sourceCode r"><span id="cb35-1"><a href="#cb35-1" aria-hidden="true" tabindex="-1"></a><span class="fu">mf_shadow</span>(district)</span>
<span id="cb35-2"><a href="#cb35-2" aria-hidden="true" tabindex="-1"></a><span class="fu">mf_map</span>(district, <span class="at">add=</span><span class="cn">TRUE</span>)</span></code><button title="Copy to Clipboard" class="code-copy-button"><i class="bi"></i></button></pre></div>
<div class="cell-output-display">
<p><img src="05-mapping_with_r_files/figure-html/shadow-1.png" class="img-fluid" width="672"></p>
</div>
</div>
</section>
<section id="creating-boxes" class="level3" data-number="5.2.17">
<h3 data-number="5.2.17" class="anchored" data-anchor-id="creating-boxes"><span class="header-section-number">5.2.17</span> Creating Boxes</h3>
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<p>The function <code>mf_inset_on()</code> allows to start creation a box. You must then “close” the box with <code>mf_inset_off()</code>.</p>
<div class="cell">
<div class="sourceCode cell-code" id="cb36"><pre class="sourceCode r code-with-copy"><code class="sourceCode r"><span id="cb36-1"><a href="#cb36-1" aria-hidden="true" tabindex="-1"></a><span class="fu">mf_init</span>(<span class="at">x =</span> dist_selected, <span class="at">theme =</span> <span class="st">"agolalight"</span>, <span class="at">expandBB =</span> <span class="fu">c</span>(<span class="dv">0</span>,.<span class="dv">1</span>,<span class="dv">0</span>,.<span class="dv">5</span>)) </span>
<span id="cb36-2"><a href="#cb36-2" aria-hidden="true" tabindex="-1"></a><span class="fu">mf_map</span>(district, <span class="at">add =</span> <span class="cn">TRUE</span>)</span>
<span id="cb36-3"><a href="#cb36-3" aria-hidden="true" tabindex="-1"></a><span class="fu">mf_map</span>(dist_selected, <span class="at">col =</span> <span class="st">"tomato4"</span>, <span class="at">border =</span> <span class="st">"tomato1"</span>, <span class="at">lwd =</span> <span class="dv">2</span>, <span class="at">add =</span> <span class="cn">TRUE</span>)</span>
<span id="cb36-4"><a href="#cb36-4" aria-hidden="true" tabindex="-1"></a></span>
<span id="cb36-5"><a href="#cb36-5" aria-hidden="true" tabindex="-1"></a><span class="co"># Cambodia inset box</span></span>
<span id="cb36-6"><a href="#cb36-6" aria-hidden="true" tabindex="-1"></a><span class="fu">mf_inset_on</span>(<span class="at">x =</span> country, <span class="at">pos =</span> <span class="st">"topright"</span>, <span class="at">cex =</span> .<span class="dv">3</span>)</span>
<span id="cb36-7"><a href="#cb36-7" aria-hidden="true" tabindex="-1"></a><span class="fu">mf_map</span>(country, <span class="at">lwd =</span> .<span class="dv">5</span>, <span class="at">border=</span> <span class="st">"grey90"</span>)</span>
<span id="cb36-8"><a href="#cb36-8" aria-hidden="true" tabindex="-1"></a><span class="fu">mf_map</span>(dist_selected, <span class="at">col =</span> <span class="st">"tomato4"</span>, <span class="at">border =</span> <span class="st">"tomato1"</span>, <span class="at">lwd =</span> .<span class="dv">5</span>, <span class="at">add =</span> <span class="cn">TRUE</span>)</span>
<span id="cb36-9"><a href="#cb36-9" aria-hidden="true" tabindex="-1"></a><span class="fu">mf_scale</span>(<span class="at">size =</span> <span class="dv">100</span>, <span class="at">pos =</span> <span class="st">"bottomleft"</span>, <span class="at">cex =</span> .<span class="dv">6</span>, <span class="at">lwd =</span> .<span class="dv">5</span>)</span>
<span id="cb36-10"><a href="#cb36-10" aria-hidden="true" tabindex="-1"></a><span class="fu">mf_inset_off</span>()</span>
<span id="cb36-11"><a href="#cb36-11" aria-hidden="true" tabindex="-1"></a></span>
<span id="cb36-12"><a href="#cb36-12" aria-hidden="true" tabindex="-1"></a><span class="co"># District inset box</span></span>
<span id="cb36-13"><a href="#cb36-13" aria-hidden="true" tabindex="-1"></a><span class="fu">mf_inset_on</span>(<span class="at">x =</span> district, <span class="at">pos =</span> <span class="st">"bottomright"</span>, <span class="at">cex =</span> .<span class="dv">3</span>)</span>
<span id="cb36-14"><a href="#cb36-14" aria-hidden="true" tabindex="-1"></a><span class="fu">mf_map</span>(district, <span class="at">lwd =</span> <span class="fl">0.5</span>, <span class="at">border=</span> <span class="st">"grey90"</span>)</span>
<span id="cb36-15"><a href="#cb36-15" aria-hidden="true" tabindex="-1"></a><span class="fu">mf_map</span>(dist_selected, <span class="at">col =</span> <span class="st">"tomato4"</span>, <span class="at">border =</span> <span class="st">"tomato1"</span>, <span class="at">lwd =</span> .<span class="dv">5</span>, <span class="at">add =</span> <span class="cn">TRUE</span>)</span>
<span id="cb36-16"><a href="#cb36-16" aria-hidden="true" tabindex="-1"></a><span class="fu">mf_scale</span>(<span class="at">size =</span> <span class="dv">100</span>, <span class="at">pos =</span> <span class="st">"bottomright"</span>, <span class="at">cex =</span> .<span class="dv">6</span>, <span class="at">lwd =</span> .<span class="dv">5</span>)</span>
<span id="cb36-17"><a href="#cb36-17" aria-hidden="true" tabindex="-1"></a><span class="fu">mf_inset_off</span>()</span>
<span id="cb36-18"><a href="#cb36-18" aria-hidden="true" tabindex="-1"></a></span>
<span id="cb36-19"><a href="#cb36-19" aria-hidden="true" tabindex="-1"></a><span class="co"># World inset box</span></span>
<span id="cb36-20"><a href="#cb36-20" aria-hidden="true" tabindex="-1"></a><span class="fu">mf_inset_on</span>(<span class="at">x =</span> <span class="st">"worldmap"</span>, <span class="at">pos =</span> <span class="st">"topleft"</span>)</span>
<span id="cb36-21"><a href="#cb36-21" aria-hidden="true" tabindex="-1"></a><span class="fu">mf_worldmap</span>(dist_selected, <span class="at">land_col =</span> <span class="st">"#cccccc"</span>, <span class="at">border_col =</span> <span class="cn">NA</span>, </span>
<span id="cb36-22"><a href="#cb36-22" aria-hidden="true" tabindex="-1"></a> <span class="at">water_col =</span> <span class="st">"#e3e3e3"</span>, <span class="at">col =</span> <span class="st">"tomato4"</span>)</span>
<span id="cb36-23"><a href="#cb36-23" aria-hidden="true" tabindex="-1"></a></span>
<span id="cb36-24"><a href="#cb36-24" aria-hidden="true" tabindex="-1"></a><span class="fu">mf_inset_off</span>()</span>
<span id="cb36-25"><a href="#cb36-25" aria-hidden="true" tabindex="-1"></a><span class="fu">mf_title</span>(<span class="st">"Bakan district and its surroundings"</span>)</span>
<span id="cb36-26"><a href="#cb36-26" aria-hidden="true" tabindex="-1"></a><span class="fu">mf_scale</span>(<span class="dv">10</span>, <span class="at">pos =</span> <span class="st">'bottomleft'</span>)</span></code><button title="Copy to Clipboard" class="code-copy-button"><i class="bi"></i></button></pre></div>
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