[gradsusr] Setting missing values (or any value) to undefined

[Jeff Duda]

maskout(WC,WC+119.9)

On Fri, Oct 30, 2015 at 10:06 AM, Matt Bunkers - WFO UNR <
matthew.bunkers at noaa.gov> wrote:

> Hi,
>
> I have hourly wind chill (WC) grids for which I want to find the minimum
> WC.  The problem I have is that some of the areas of the grids are missing
> (set to -120).  When I compute the minimum WC and then display the result
> (as either image or contour) I get huge gradients between the real data and
> the missing data.  What I would like to do is set my missing data to
> undefined (so they don't plot).  I've tried that with the const function
> but that doesn't appear to work.  Is there another function that would
> allow me to set a given value (-120 in this case) of my grid to undefined?
> If it is set to undefined then when I plot the grid I shouldn't see those
> horrendous gradients.
>
> Thanks,
>
> -- Matt
>
>
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-- 
Jeff Duda
Graduate research assistant
University of Oklahoma School of Meteorology
Center for Analysis and Prediction of Storms
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