[gradsusr] label contour values greater than zero

[Mubashar Dogar]

Dear GrADS users,

I have plotted a spatial map for precipitation anomaly field in GrADS
& then I have contoured this map by saying set gxout contour. Now my
contour map has "0" values at certain places. I wanted to get rid of
these zeros (I don't want to label them) by keeping rest values as it
is. For a clear view you may see an attached plot. How can I remove
labelling 0's and keep every thing else as it is?

Thanks,

Mubashar
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