Hello 
Thanks. Yes, your suggestion would work.  But in such way I don't know how to make my legend to be consistent.  I mean also add border to markers in the legend. 
Thanks
Xiaoming 
CC: ncl-talk@ucar.edu
From: brownrig@ucar.edu
To: yuanfangcan@hotmail.com
Subject: Re: Add border to the Markers
Date: Wed, 10 Nov 2010 09:42:41 -0700
Hi,
You might try drawing the markers as solid black first, then redraw them slightly smaller in the other color.  I've not tried this myself, but I would think it should work.
Rick
On Nov 10, 2010, at 9:34 AM, xiaoming Hu wrote:Hello 
Can we add border to the markers like the attached figure?
Thanks 
Xiaoming 
 
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Received on Wed Nov 10 09:54:08 2010
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