allow pie charts with a single/no class if expressions given

MapServer · Apr 29, 2012 · 185f3fb · 185f3fb
1 parent 572770e
commit 185f3fb
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/mapchart.c b/mapchart.c
@@ -590,7 +590,7 @@ int msDrawChartLayer(mapObj *map, layerObj *layer, imageObj *image)
             return MS_FAILURE;
         }
 
-        if( layer->numclasses < 2 ) {
+        if( layer->numclasses < 2 && !layer->class[0]->expression.string) {
             msSetError(MS_MISCERR,"chart drawing requires at least 2 classes in layer", "msDrawChartLayer()");
             return MS_FAILURE;
         }