[gradsusr] Is there a way to restore the color to a constant field when plotting using gxout grfill?

[Jennifer Adams]

On Apr 30, 2014, at 11:11 AM, Bob Kuligowski - NOAA Federal wrote:

> Davide--Your suggestion worked; thanks!
It's always good to have a workaround. 

> 
> Jennifer--I couldn't get your suggestions to work in a script. 
If you don't mind, I would like to follow up on why the direct approach isn't working for you. 
Can you show the simplest possible script that illustrates this failure? 
What version of GrADS are you using?

> However, I could get it to work in command line mode, but the selected color would display only if datawarn was set to *on*;
That's correct.

> if it was off then it plotted the background color field like before. 
I cannot duplicate this behavior. 

'clear'
'd ps'
'set datawarn off'
'set ccolor 8'
'd const(ps,10)'

The second display command does not cover the existing plot with a constant field of any color. 
--Jennifer

> I'm not sure why that is, but thanks for your help also!

> 
> Cheers,
> Bob
> 
> Davide--
>> To control the color of the constant field, use 'set ccolor'. To disable drawing of the constant color entirely, use 'set datawarn off'. 
>> --Jennifer
>> 
>> 
>> 
>> On Apr 30, 2014, at 9:52 AM, Davide Sacchetti wrote:
>> 
>>> the only trick I know is:
>>> - understand if the field is constant or not (by set gxout stat: compare
>>> min and max)
>>> - if constant add a little varying field, eg.: if mslp is constant
>>> display something like mslp +lon/10000
>>> 
>>> its' not clean but it's what I'm doing ...
>>> Davide
>>> 
>>> On Wed, 2014-04-30 at 08:50 -0400, Bob Kuligowski - NOAA Federal wrote:
>>>> All,
>>>> 
>>>>     When GrADS plots a constant field usinggxout grfill it plots a 
>>>> blank (white) field instead of using the appropriate color. Is there a 
>>>> way to override this?  Thanks!
>>>> 
>>>> Cheers,
>>>> 
>>> 
>>> -- 
>>> Davide Sacchetti
>>> Centro Funzionale Meteo Idrologico di Protezione Civile della Regione Liguria
>>> ARPAL Unità Tecnica Complessa di livello Regionale
>>> V.le Brigare Partigiane 2 16121 Genova (I)
>>> tel: +39 010 6437535                    fax: +39 010 6437520
>>> mail: davide.sacchetti at arpal.gov.it     web: www.meteoliguria.it
>>> 
>>> 
>>> _______________________________________________
>>> gradsusr mailing list
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>>> http://gradsusr.org/mailman/listinfo/gradsusr
>> 
>> --
>> Jennifer M. Adams
>> Center for Ocean-Land-Atmosphere Studies (COLA)
>> 111 Research Hall, Mail Stop 2B3
>> George Mason University
>> 4400 University Drive
>> Fairfax, VA 22030 
>> 
>> 
>> 
>> 
>> 
>> 
>> 
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> 
> 
> -- 
> Bob Kuligowski, Ph.D.
> Meteorologist
> NOAA/NESDIS/Center for Satellite Applications and Research (STAR)
> 
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> 
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--
Jennifer M. Adams
Center for Ocean-Land-Atmosphere Studies (COLA)
111 Research Hall, Mail Stop 2B3
George Mason University
4400 University Drive
Fairfax, VA 22030 





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