[gradsusr] How to change the color spectrum into a black and white / grey spectrum?

[Davide Sacchetti]

for X11 display:
        set display gray white
        clear

for the palette:
        set ccolor rainbow
or:
        set ccolor revrain (old command: it doesn't seem to have any
        affect on grads2)
        
for eps output:
        gxeps -b ...


if you want to produce a custum palette you can, e.g.:
        set rgb 20 ...
        set rgb 21 ...
        ...
        set rgb 30 ...
        set rbcols 20 21 ... 30
or:
        set ccols 20 21 ... 30
        set clevs ...

bye bye
Davide

On Tue, 2013-04-16 at 22:32 -0700, Mohsen Soltani wrote:
> Dear Friends;
> 
> I wanna make a grey output. How can I change the colorbar's spectrum
> from color into grey? I mean I’ve like to have a heavy dark black to
> light grey and finally white colorbar's spectrum. 
> 
>  
> 
> I used this to make a grey chart, …..  '!gxeps -b -i filename -o E:/
> filename.eps' . Using "-b " instead of –C, produces a black and white
> map. But I’m afraid the output doesn’t look like very good! Therefore,
> I wanna change it from color into a range of black and white colors
> through defining new colorbar's spectrum.
> 
>  
> 
> How can I do that? Any suggestion?
> 
>  
> 
> Yours,
> 
> Mohsen
> 
> 
> --
> some are weather-wise some are otherwise!
> --
> Best Wishes,                                        
> (Mr.) Mohsen Soltani
> Climatology Grad Student (M.Sc.),
> Faculty of Geography, University of Tehran, Tehran, Iran
> Tel: (+98) 9119772934
> e-mail: soltani.clima at gmail.com
> 
> _______________________________________________
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> gradsusr at gradsusr.org
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-- 
--> Attenzione cambio indirizzo: davide.sacchetti at arpal.gov.it
--
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