[ncl-talk] no background color for gsn_csm_streamline_contour_map

[xiaoming Hu]

     Hello
I would like to overlay streamline on terrain height using gsn_csm_streamline_contour_map.
But I only get streamline, but no terrain height. See the following figure.  
Anybody knows what is happening? I attached my ncl script. 
     
Thanks a lot 

Xiaoming 
 		 	   		  
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