Index: /issm/trunk-jpl/src/m/plot/processdata.py
===================================================================
--- /issm/trunk-jpl/src/m/plot/processdata.py	(revision 13968)
+++ /issm/trunk-jpl/src/m/plot/processdata.py	(revision 13969)
@@ -69,4 +69,8 @@
 	#control arrow density if quiver plot
 
+	#convert rank-2 array to rank-1
+	if npy.ndim(data)==2 and npy.shape(data)[1]==1:
+		data=data.reshape(-1,)
+
 	#if datatype is still zero, error out
 	if datatype==0: