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Re: Color table [message #81901 is a reply to message #8601]

Sat, 10 November 2012 17:38

David Fanning
Messages: 11724
Registered: August 2001

Senior Member

Gompie writes:

> I have a single variable spread over three years. I wish to give a
different color to each year.
>
> But instead of color I get grey scale. I have the following script.
>
>
> cgLoadCT, 4, NCOLORS=3, CLIP=[16,240]
> bplate=fltarr(18)
> name=strarr(18)
> mont=fltarr(19)
> years=fltarr(19)
> ffiles = FILE_SEARCH('*.txt1')
> for index=0,n_elements( ffiles)-1 do begin
> year=(strsplit(ffiles(index),'.,_',/extract))[0]
> month=(strsplit(ffiles(index),'.,_',/extract))[1]
> name(index)=string(month)
> years(index) = float(year)
> OPENR, lun, ffiles(index), /GET_LUN
> temp=0.0D
> i=0L
> data=strarr(1)
> print,ffiles(index)
> WHILE ~ EOF(lun) DO BEGIN
> readf,lun,data
> temp=float(data) + temp
> i=i+1
> ;print,i,float(data),data
> ENDWHILE
> print,temp/i
> bplate(index)=temp/i
> mont(index)=index
> close,lun
> free_lun,lun
> endfor
>
> colors = Scale_Vector(Findgen(3), 2009, 2011)
>
> elevColors = Value_Locate(colors,years )
> elevColors = StrTrim(Round(Scale_Vector(elevColors, 0, 10)),2)
>
> !X.TICKNAME=name
>
> cgplot,mont,bplate,psym=4,thick=2,xticks=17,yrange=[260,270] ,xtitle='MONTHS',ytitle='MIN_0_87_MICRON_DETECTOR_TEMP',BACK GROUND = 255, COLOR = 0
> FOR j=0,n_elements(mont)-2 DO cgPlotS, mont[j], bplate[j], Color=elevColors[j], Thick=2,psym=sym(5),symsize = 1.15
> fname="bplate.gif"
> result = cgSnapshot(FILENAME=fname,/gif ,/nodialog)

Uh, well, I think I would just do something like this:

elevColors = ['red', 'green', 'blue']

> Question .2 . Is it possible to view the exact colors Vs color number that are finally loaded by the color table.

Try CIndex:

IDL> cindex

Cheers,

David

--
David Fanning, Ph.D.
Fanning Software Consulting, Inc.
Coyote's Guide to IDL Programming: http://www.dfanning.com/
Sepore ma de ni thue. ("Perhaps thou speakest truth.")

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[Message index]

		color table By: Ye Hong on Wed, 26 March 1997 00:00
		Re: color table By: J.D. Smith on Wed, 26 March 1997 00:00
		Re: Color table By: R.Bauer on Thu, 05 August 2004 06:41
		Re: Color table By: R.G. Stockwell on Thu, 05 August 2004 08:46
		Re: Color table By: David Fanning on Wed, 04 August 2004 21:05
		Re: Color table By: David Fanning on Mon, 21 January 2008 07:09
		Re: Color table By: WRC2008 on Thu, 24 January 2008 00:31
		Re: Color table By: WRC2008 on Mon, 21 January 2008 04:35
		Re: Color table By: WRC2008 on Mon, 21 January 2008 02:02
		Re: Color table By: David Fanning on Sun, 20 January 2008 09:53
		Re: Color table By: mmiller3 on Sun, 20 January 2008 07:58
		Re: Color table By: Vince Hradil on Sat, 19 January 2008 10:39
		Re: Color table By: WRC2008 on Sat, 19 January 2008 04:27
		Re: Color table By: David Fanning on Fri, 25 January 2008 05:23
		Re: Color table By: WRC2008 on Fri, 25 January 2008 04:47
		Re: Color table By: WRC2008 on Fri, 25 January 2008 02:35
		Re: Color table By: David Fanning on Fri, 25 January 2008 01:15
		Re: Color table By: WRC2008 on Fri, 25 January 2008 00:54
		Re: Color table By: David Fanning on Thu, 24 January 2008 10:00
		Re: Color table By: WRC2008 on Thu, 24 January 2008 09:41
		Re: Color table By: David Fanning on Thu, 24 January 2008 09:25
		Re: Color table By: WRC2008 on Thu, 24 January 2008 09:02
		Re: Color table By: David Fanning on Thu, 24 January 2008 08:19
		Re: Color table By: WRC2008 on Thu, 24 January 2008 07:17
		Re: Color table By: David Fanning on Thu, 24 January 2008 05:04
		Re: Color Table By: Nikola on Wed, 18 August 2010 05:44
		Re: Color Table By: panblosky on Tue, 17 August 2010 06:32
		Re: Color Table By: Wout De Nolf on Tue, 17 August 2010 05:42
		Re: Color table By: David Fanning on Sat, 10 November 2012 17:38

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