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Re: grey scale [message #12510 is a reply to message #12492]

Thu, 13 August 1998 00:00

Martin Schultz
Messages: 515
Registered: August 1997

Senior Member

Harry Reisig wrote:
>
> Howdy -
> Does anyone know if there is a grey-scale color table on IDL 5.0.2 (for
> PowerMac)? I need to publish some tvscl images (currently being viewed with
> color table 4) in grey-scale.
> I imagine that there is one posted somewhere, but I don't know where.
> Thanks
> Harry

should be colortable 0 (at least this is the number for Unix).
If loadct,0 does not work, try the following

cvec = bytscl(indgen(!D.N_COLORS),top=255) ; create grey scale
tvlct,cvec,cvec,cvec ; store the color table

If you apply REVERSE() to bytscl, you will get colors from white to
black.

Hope this helps,
Martin.

--
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Dr. Martin Schultz
Department for Earth&Planetary Sciences, Harvard University
109 Pierce Hall, 29 Oxford St., Cambridge, MA-02138, USA

phone: (617)-496-8318
fax : (617)-495-4551

e-mail: mgs@io.harvard.edu
Internet-homepage: http://www-as.harvard.edu/people/staff/mgs/
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[Message index]

		Re: grey scale By: wmc on Fri, 14 August 1998 00:00
		Re: grey scale By: davidf on Thu, 13 August 1998 00:00
		Re: grey scale By: David Foster on Thu, 13 August 1998 00:00
		Re: grey scale By: Martin Schultz on Thu, 13 August 1998 00:00
		Re: grey scale By: Richard G. French on Thu, 13 August 1998 00:00
		Re: grey scale By: Harry Reisig on Thu, 13 August 1998 00:00
		Re: grey scale By: Saeid.Zoonematkermani on Thu, 13 August 1998 00:00
		Re: grey scale By: Martin Schultz on Thu, 13 August 1998 00:00

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