[gradsusr] requesting for help

[Zerihun Hailemariam]

I am using grads for displaying one dimensional  model data,say it rainfall from GFS, for fixed Lat Long but varying time dimension. the display command looks like 'd (pratesfc)*60*60*3' this will display very smart line graph that represent the forecast ed rainfall as a function of time. by my intention is to display the cumulative line graph.how can i do that.
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