Index: /issm/trunk-jpl/src/m/exp/exp2shp.m
===================================================================
--- /issm/trunk-jpl/src/m/exp/exp2shp.m	(revision 22928)
+++ /issm/trunk-jpl/src/m/exp/exp2shp.m	(revision 22929)
@@ -35,6 +35,10 @@
 		elseif length(shp(1).x) < 3
 			geometry = 'Line';
-		else
-			geometry = 'Polygon';
+		else 
+			if (shp(1).x(end)==shp(1).x(1) && shp(1).y(end)==shp(1).y(1)),
+				geometry = 'Polygon';
+			else
+				geometry = 'Line';
+			end
 		end
 	end