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Re: cgcontour colours for 2 panel plot [message #84831 is a reply to message #84828]

Wed, 12 June 2013 09:25

Phillip Bitzer
Messages: 223
Registered: June 2006

Senior Member

If I may, let me throw a different way of handling this in here, that doesn't bother with color tables.

Let's say you have 5 levels you want. Here's some pseudo-code below. You shouldn't have to worry about where in the color table one range falls relative to the other in this case.

I've also put a snippet of some IDL notes I have up that may or may not help here:
https://docs.google.com/file/d/0BxRn65i6z-Z5bjhFUUM1RWNVb0k/ edit?usp=sharing

;define some colors
colors = ['blue', 'red', 'green', 'yellow', 'orange']

nLev = N_ELEMENTS(colors)

;and get the palette for these colors:
rgb = cgCOLOR(colors, /TRIPLE)

;define some levels:
levs = FINDGEN(nLev)*10

;and make the plots:
cgContour, data1, LEVELS = levs, PALETTE=rgb
cgContour, data2, LEVELS = levs, PALETTE=rgb

;now define the tickmarks for the colorbar:
l_ticks = [STRING(levs, FORMAT='(F4.1)'), ' ']

;now make the color bar
cgCOLORBAR, NCOLORS=nLev, PALETTE=rgb, DIVISION=nLev, TICKNAMES=l_ticks

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[Message index]

		cgcontour colours for 2 panel plot By: ej on Tue, 11 June 2013 20:53
		Re: cgcontour colours for 2 panel plot By: David Fanning on Wed, 12 June 2013 06:04
		Re: cgcontour colours for 2 panel plot By: ej on Wed, 12 June 2013 08:43
		Re: cgcontour colours for 2 panel plot By: David Fanning on Wed, 12 June 2013 08:53
		Re: cgcontour colours for 2 panel plot By: ej on Wed, 12 June 2013 09:18
		Re: cgcontour colours for 2 panel plot By: David Fanning on Wed, 12 June 2013 09:26
		Re: cgcontour colours for 2 panel plot By: Phillip Bitzer on Wed, 12 June 2013 09:25
		Re: cgcontour colours for 2 panel plot By: ej on Wed, 12 June 2013 09:35
		Re: cgcontour colours for 2 panel plot By: David Fanning on Wed, 12 June 2013 14:10
		Re: cgcontour colours for 2 panel plot By: Phillip Bitzer on Wed, 12 June 2013 14:32

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