skipping negative values in GRADS

[Douglas Clark]

Sachin,

Maskout will also work when averaging etc, and wil omit negative values from the average, as you require.l

Either use directly
e.g. d ave (maskout(var,var),t=1,t=60)
or first define a masked variable if you're going to use it a lot
e.g. define maskvar=maskout(var,var)
d ave(maskvar,t=1,t=60)

Doug


>>> sachinghude at TROPMET.RES.IN 26/03/2007 12:48 >>>


Thank you very much for your kind suggestion.

My bad data lie below 0 and good data is above 0 then maskout will work.

But what if while taking area average,

For example

set lat 0 40

set lon 50 110

maskout (var,var)

d ave (var,t=1,t=60)

Will this reject negative values (below 0) while calculating average from month 1 to 60.

Thanks in advance

Sachin


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