corrected the use of the graph path

argparser.py

@@ -53,7 +53,7 @@ def read_args(args):
     path_list.append(args.source_genome)
     if args.segment_coordinates_path==".":
         print("run getSegCoord.py")
-        seg_coord("RiceGraph_cactus.gfa",path_list)
+        seg_coord(args.graph.name,path_list)
         args.segment_coordinates_path="seg_coord/"
     #else:
     #    path_segcoord=args.segment_coordinates_path