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Re: change colors on colortable [message #94409 is a reply to message #94407]

Thu, 11 May 2017 03:06

Nikola
Messages: 53
Registered: November 2009

Member

On Wednesday, May 10, 2017 at 11:58:52 PM UTC+1, John Sofiadis wrote:
> hi!i wonder if anyone could inform me how to change colors at a given colortable.thank you in advance!

A color table consists of three arrays, each with 256 elements with values in the range [0, 255]. Arrays correspond to the red, green and blue channel (axis of the color cube). To see the arrays that are currently active, execute

TVLCT, r, g, b, /get

To change manually the color scale, alter the arrays r, g, b as you want and then execute

TVLCT, r, g, b

If you want to select one of the IDL predefined color tables, you can do it using

LOADCT, number of the color table (0 = grayscale, 13 = rainbow, etc).

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[Message index]

		change colors on colortable By: John Sofiadis on Wed, 10 May 2017 15:58
		Re: change colors on colortable By: Nikola on Thu, 11 May 2017 03:06

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