[gradsusr] How to mask out areas outside Mississippi basin ?

bo-dong at huskers.unl.edu bo-dong at huskers.unl.edu
Thu Mar 1 13:01:03 EST 2012


Dear All,



I have a netcdf file with data covered the U.S., but I only want to display the area of Mississippi River basin. Any idea about how to mask out areas outside Mississippi River basin? Also, I need to do a basin average (i.e. average all the data within Mississippi river basin), the aave() function seems to average all the areas in U.S., not only in the river basin.



Your assistance is greatly appreciated.

Thanks,

Bo
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