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Re: Histogram with logarithmic filling [message #48844 is a reply to message #48843]

Wed, 31 May 2006 10:11

David Fanning
Messages: 11724
Registered: August 2001

Senior Member

Jo Klein writes:

> Hm why not? Have you tried setting the /ylog keyword to plothist? What
> happens then?

Well, it is a *little* more complicated than that because
the author of PLOTHIST never anticipated someone might actually
set the PLOT YLOG or XLOG keywords. I've only investigated
the case where YLOG=1, but you have to change a number of
yfill values to 1 (instead of 0), and you have to remember
that !Y.CRANGE contains the exponents of the range values,
not the values themselves when you are in a LOG plot. So you
need something like this:

Yfill = Yfill > 10^(!Y.CRANGE[0]) < 10^(!Y.CRANGE[1])

In place of this:

Yfill = Yfill > !Y.CRANGE[0] < !Y.CRANGE[1]

But about 10 minutes work should set you right for log plots. :-)

Cheers,

David
--
David Fanning, Ph.D.
Fanning Software Consulting, Inc.
Coyote's Guide to IDL Programming: http://www.dfanning.com/

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[Message index]

		Re: Histogram with logarithmic filling By: David Fanning on Wed, 31 May 2006 10:15
		Re: Histogram with logarithmic filling By: David Fanning on Wed, 31 May 2006 10:11
		Re: Histogram with logarithmic filling By: Jo Klein on Wed, 31 May 2006 09:36

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