Hello,
I am looking for an efficient way to mask a gridcoverage1 with another
gridcoverage2(or polygon shape).That is,  I am calculating the number of
occurences of a given value in a band (integer, 0 as well), but I would like
to take into account only those in the area defined by 
gridcoverage2/polygon. It will be also interesting if I could mask all bands
in gridcoverage1 with gridcoverage2/polygon. A simple example sample will be
appreciated.
Thanks very much for your help.:-)
Agossa.
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