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<div style="line-height:1.6;font-family:'苹方','微软雅黑','sans-serif';"><font style="font-size:17px;"><br/>I'm ploting a contour of an area. But boundries of the interest area in Ncarg4_0 database can't match with my shapefile. I have searched for ploting an area and masking outside using a polyline or polygon shapefile on <a href="www.ncl.ucar.edu.But">www.ncl.ucar.edu.But</a> I haven't found a method dealing with this. Is there some ways that can help in ploting contour of an area only inside of a geocoded polygon？<br/>Thanks a lot.</font></div><!DOCTYPE html>
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