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What's my colour table? [message #56898]

Thu, 22 November 2007 09:07

Spon
Messages: 178
Registered: September 2007

Senior Member

Hi guys,

quick question: is there a system variable that stores the colour
table that I've currently got loaded? So that I can, for example,
store that number in a variable within a function, load a new colour
table, and then load back the old one before I return back to the
previous level? I can't find it in the helpfile if it's there.

e.g.

FUNCTION CTTEST, Data

OldCT = !D.CT ; or whatever it's called
CTLOAD, 0 ; load greyscale
; do something that requires greyscale
S = SIZE (Data, /DIM)
RoI = DEFROI (S[0], S[1])

; and grab back the old colour table
CTLOAD, OldCT
RETURN, RoI
END

Thanks,
Chris

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