[gradsusr] Gray scale

[hersala]

Hi Galebonwe:
Please, see this example about how to define your own gray scale.

http://cookbooks.opengrads.org/index.php?title=Recipe-026:_Using_World_Coordinates_to_Annotate_your_Plots

Cheers,
Hernán


2010/4/1 Galebonwe Ramaphane <GRamaphane at gov.bw>

> Graduser,
>
> I'm attempting to display cloud cover in grayscale. I would like
> something like ;
>
> 25% cover        ----- very light gray
> 50% cover       ----- light gray
> 75% cover        ----gray
> 100% cover     ----dark gray/black
>
> I have also attempted to define my RGB gray scale( see attached script).
> However I seem to get only one color on the plot( see attached picture)
>
> I defined my clevs and ccols thus;
>
>   rgb_gray1
>   set gxout shaded
>  * set cmin 15
>   set clevs 25 50 75 100
>   set ccols 0 23 24 28 30
>   display clcm
>   cbarn
>
> Any  suggestions will be welcome.
>
> Galebonwe Ramaphane
> Department of Meteorological Services
> P.O. BOX 10100
> Gaborone
> Botswana
> Tel: +267 3612200
>
>
>
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