| Re: switch colortable [message #31820] |
Thu, 22 August 2002 20:24  |
tom
Messages: 28
Registered: April 1995
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Junior Member |
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Thanks. A very simple contour plot is as following:
levels=12
LoadCT, 0, Bottom=1,NColors=levels
; TVLCT, r, g, b, /Get
;TVLCT, Reverse(r), Reverse(g), Reverse(b)
maxp=max(peak,/nan) & minp=min(peak,/nan)
step = (Maxp - Minp) / levels
userLevels = IndGen(levels) * step + Minp
; Draw a colorbar.
Contour,
peak,x,y,/cell_fill,Background=white,C_Colors=Indgen(levels) +1,Levels=userLe
vels
I hope the color at maximum is black. Your suggestion sems does not help.
Tom
"David Fanning" <david@dfanning.com> д����Ϣ����
:MPG.17ce8849b6fe4f2e989973@news.frii.com...
> tom (tom2959@21cn.com) writes:
>
>> Some the colortables(loadct,0,1...) have colors vary from some
>> color(black,blue,...) to white linearly. But I hope the colortable
changing
>> from white to some color(black,...). Then when I plot contour, the
maximun
>> peaks can display clearly. How to do that then?
>
> Here is one way:
>
> TVLCT, r, g, b, /Get
> TVLCT, Reverse(r), Reverse(g), Reverse(b)
>
> Another way is to start XLOADCT, then grab the
> Stretch Top thingy and drag it all the way to
> the left, and drag the Stretch Bottom thingy
> all the way to the right. Hit the DONE button.
>
> Cheers,
>
> David
>
> --
> David W. Fanning, Ph.D.
> Fanning Software Consulting, Inc.
> Phone: 970-221-0438, E-mail: david@dfanning.com
> Coyote's Guide to IDL Programming: http://www.dfanning.com/
> Toll-Free IDL Book Orders: 1-888-461-0155
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