Index: /issm/trunk-jpl/src/m/plot/plot_overlay.m
===================================================================
--- /issm/trunk-jpl/src/m/plot/plot_overlay.m	(revision 28023)
+++ /issm/trunk-jpl/src/m/plot/plot_overlay.m	(revision 28024)
@@ -149,4 +149,5 @@
 		ind = ceil((len-1)*(data_grid-data_min)/(data_max - data_min + eps) +1);
 		ind(find(ind>len))=len;
+		ind(isnan(ind))=len;
 		image_rgb=zeros(size(data_grid,1),size(data_grid,2),3);
 		r=colorm(:,1); image_rgb(:,:,1)=r(ind); clear r;