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Re: (simple question) PLOT, YTICKS in /YLOG AXIS [message #59493 is a reply to message #59492]

Fri, 28 March 2008 13:52

David Fanning
Messages: 11724
Registered: August 2001

Senior Member

bernat writes:

> Looks this example:
>
> Plot, [10], [0.3], yr=[0.22,0.55], xr=[0,20], ystyle=1, /ylog,
> psym=2, yticks=1, ytickv=loglevels([0.22,0.55])
>
> the result is:
>
> % PLOT: Data coordinate system not established.

This happens when there is a mismatch between the number
of values returned by LOGLEVELS and the number you use
for YTICKS. This is why I think you should look at the
*REVISED* web page article and use the code you find there:

ticks = LOGLEVELS([0.22,0.55])
nticks = N_Elements(ticks)
Plot, data, /YLOG, YRANGE([0.22,0.55])YTICKS=nticks-1, $
YTICKV=Reverse(ticks)

Cheers,

David
--
David Fanning, Ph.D.
Fanning Software Consulting, Inc.
Coyote's Guide to IDL Programming: http://www.dfanning.com/
Sepore ma de ni thui. ("Perhaps thou speakest truth.")

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[Message index]

		Re: (simple question) PLOT, YTICKS in /YLOG AXIS By: David Fanning on Fri, 28 March 2008 14:06
		Re: (simple question) PLOT, YTICKS in /YLOG AXIS By: David Fanning on Fri, 28 March 2008 14:03
		Re: (simple question) PLOT, YTICKS in /YLOG AXIS By: David Fanning on Fri, 28 March 2008 13:57
		Re: (simple question) PLOT, YTICKS in /YLOG AXIS By: Paul Van Delst[1] on Fri, 28 March 2008 13:57
		Re: (simple question) PLOT, YTICKS in /YLOG AXIS By: David Fanning on Fri, 28 March 2008 13:52
		Re: (simple question) PLOT, YTICKS in /YLOG AXIS By: natha on Fri, 28 March 2008 13:06
		Re: (simple question) PLOT, YTICKS in /YLOG AXIS By: David Fanning on Fri, 28 March 2008 12:28
		Re: (simple question) PLOT, YTICKS in /YLOG AXIS By: natha on Fri, 28 March 2008 12:18
		Re: (simple question) PLOT, YTICKS in /YLOG AXIS By: David Fanning on Fri, 28 March 2008 11:22
		Re: (simple question) PLOT, YTICKS in /YLOG AXIS By: natha on Fri, 28 March 2008 10:55
		Re: (simple question) PLOT, YTICKS in /YLOG AXIS By: David Fanning on Fri, 28 March 2008 10:46
		Re: (simple question) PLOT, YTICKS in /YLOG AXIS By: Jo Klein on Fri, 28 March 2008 10:18

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