[gradsusr] color scale shading

[Jeff Duda]

When you use 'set clevs' and 'set ccols' to create a custom color table,
the number of entries in 'set ccols' needs to be one more than the number
of entries in 'set clevs'.  You have 7 contour values in your 'set clevs'
command and 9 values in your 'set ccols' command.  You should notice the
lack of color between 0 and +0.5 rather than between -0.5 and +0.5.  The
first value in the 'set ccols' entry will correspond to the color for all
values below the lowest contour value specified in the 'set clevs' command.

Jeff Duda


On Fri, Apr 25, 2014 at 11:40 AM, Ahmed Abdelkarim <
ahmed.akarim2010 at gmail.com> wrote:

> Dear Grade user
>
> Good eveing
>
>
> I have a problem with the colors shading  to local a zero between -0.5 and
> +0.5
>
> I was using it from the grads web site
>
> Please  could you assiste me to resolve this
>
>
>
> ** And we can plot....
> 'set gxout shaded'
> 'set rgb  16    0    0  255'
> 'set rgb  17   55   55  255'
> 'set rgb  18  110  110  255'
> 'set rgb  19  165  165  255'
> 'set rgb  20  220  220  255'
>
> * These are the RED shades
> 'set rgb  21  255  220  220'
> 'set rgb  22  255  165  165'
> 'set rgb  23  255  110  110'
> 'set rgb  24  255   55   55'
> 'set rgb  25  255    0    0'
>
> *******************************************************************
>
> 'set clevs    -2 -1 -0.5 0  0.5 1 2   '
> 'set ccols   17 18 19 20 0 21 22 23 24  '
>
>
>
> --
> * Ahmed Mohamed Abdelkarim
> PhD in Meteorology
> Commutation & IT manager
> Sudan Meteorological Authority (SMA)
> Khartoum - Sudan - PO. Box 574
>
> *
> _______________________________________________
> gradsusr mailing list
> gradsusr at gradsusr.org
> http://gradsusr.org/mailman/listinfo/gradsusr
>



-- 
Jeff Duda
Graduate research assistant
University of Oklahoma School of Meteorology
Center for Analysis and Prediction of Storms
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