when reading netcdf file with version 1.5, var_LINCOEF_CONV was not set...

when reading netcdf file with version 1.5, var_LINCOEF_CONV was not set correctly to offset and slope

tsg_util/updateTsgStruct.m

@@ -107,10 +107,22 @@ var ={'SSJT_LINCOEF', 'CNDC_LINCOEF', 'SSTP_LINCOEF'};
 lin_type = {'offset','slope'};
 lin_val  = [0,1];
 
+% loop over each variables
+% ------------------------
 for i = 1:numel(var)
+  
+  % check if var_LINCOEF not empty
+  % -----------------------------------  
   if isempty(tsg.(var{i}))
     for j = 1:tsg.dim.LINCOEF
       tsg.(var{i})(j) = lin_val(j);
+    end
+  end
+  
+  % check if var_LINCOEF_CONV not empty
+  % -----------------------------------
+  if isempty(tsg.([var{i} '_CONV']))
+    for j = 1:tsg.dim.LINCOEF
       tsg.([var{i} '_CONV']) = ...
         [tsg.([var{i} '_CONV']); padding(lin_type{j}, tsg.dim.COEF_CONV_SIZE)];
     end