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Re: Printing to postscript [message #11259 is a reply to message #891]

Wed, 18 March 1998 00:00

wmc
Messages: 117
Registered: February 1995

Senior Member

In article 519E@ukc.ac.uk, Jon Marchant <jmm@ukc.ac.uk> writes:
> I've currently got IDL to print encapsulated postscript
> files, but when printed out the colour (grey) range isn't
> as large as it should be, i.e. it goes from black to medium
> grey instead of black to white. I've checked the data and the
> code, the full range of the colour table should definitely be
> in the graphs, and indeed is apparent when the same plot is
> sent to the screen. Does anyone have any idea what's going
> wrong?

A suggestion: if you just set_plot,'ps' then you are assigned the default
ps colour table; if you want ps to use the colour table you are using for
on-screen work then you need to say ?device,/col? or somesuch. Another
suggestion: when plotting to the screen, you often have only, say, 170 colours
available; so colour indices 0...169 are (say) black to white. If you switch to
ps, you have 256 colours available, so 0...169 no longer span the full range.

- William

---
William M Connolley | wmc@bas.ac.uk | http://www.nbs.ac.uk/public/icd/wmc/
Climate Modeller, British Antarctic Survey | Disclaimer: I speak for myself

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[Message index]

		printing to postscript with PV_WAVE By: worth on Wed, 31 March 1993 09:22
		Re: Printing to postscript By: wmc on Wed, 18 March 1998 00:00
		Re: Printing to postscript By: woodford on Tue, 17 March 1998 00:00

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