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Re: Inverting colourtable [message #25661 is a reply to message #25660]

Thu, 05 July 2001 06:07

btt
Messages: 345
Registered: December 2000

Senior Member

Hi,

You can use the TVLCT procedure to get and then set the colors...

IDL> tvlct, r,g,b, /get
IDL> help, r,g,b
R BYTE = Array[256]
G BYTE = Array[256]
B BYTE = Array[256]
IDL> tvlct, reverse(r), reverse(g), reverse(b)

Ben

Simon de Vet wrote:
>
> I've been printing a lot of filled contour maps using the B&W colour
> table (CT#0). This was great when I had mostly white or light grey
> values, but lately I've been in the black, and this seriously eats up
> the toner.
>
> Is there an quick and easy way to reverse the colours in a colourtable?
>
> -- Simon

--
Ben Tupper
Bigelow Laboratory for Ocean Sciences
180 McKown Point Rd.
W. Boothbay Harbor, ME 04575
btupper@bigelow.org

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[Message index]

		Re: Inverting colourtable By: david[2] on Thu, 05 July 2001 07:21
		Re: Inverting colourtable By: Simon de Vet on Thu, 05 July 2001 06:13
		Re: Inverting colourtable By: btt on Thu, 05 July 2001 06:07

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