mask the data for a region

From: Jiangfeng Wei <jwei_at_nyahnyahspammersnyahnyah>
Date: Sat, 18 Nov 2006 00:39:46 -0500

I want to do a EOF analysis for the data at the conterminous US only, so I
have to mask the data for that region, and data outside of that region should
be set to missing values. I see some examples to plot:
http://www.ncl.ucar.edu/Applications/polyg.shtml, but this doesn't mask the
data. Any ideas or US mask data available?

thanks,
Jiangfeng

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Received on Fri Nov 17 2006 - 22:39:46 MST

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