[gradsusr] set negative values to zero

[Edward Pollock]

You can do this.

'd const(maskout(var,var),0,-u)'.

Cheers,

Ted

On Thu, Jul 21, 2011 at 11:09 AM, Eungul Lee <eungul.lee at gmail.com> wrote:

> Dear GrADS users,
>
> I am using GrADS v2.0.a9 in Linux.
>
> I am going to set negative values to zero at each grid point in NetCDF
> file.
> I've been trying this using "if statements" in .gs file like below,
> but it didn't work.
>
> 'open .ctl file'
>  if (varname < 0.)
>    varname = 0.
>  endif
>
> If you have any experience in GrADS for this, please let me know.
>
> Thanks in advance,
> Eugene
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