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Re: trivial problem: How do I change the axis scale in an image plot? [message #82521 is a reply to message #82520]

Tue, 18 December 2012 19:12

David Fanning
Messages: 11724
Registered: August 2001

Senior Member

Balthasar Indermuehle writes:

> I'm having an off day... I have an image that's plotted using the cgIMAGE function. The Yscale is in seconds, and in log space. That all works beautifully, except I'd like it to be in minutes, not seconds... surely there's a simple way to replace the original Y axis labels with ones that are divided by 60?

I'd try this tick formatting function:

FUNCTION DoSeconds, axis, index, number
Return, String(number/60., Format='(F7.1)')
END

And set your YTickFormat keyword to it:

cgImage, ..., YTICKFORMAT='DoSeconds'

Cheers,

David

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

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[Message index]

		Re: trivial problem: How do I change the axis scale in an image plot? By: Balthasar Indermuehle on Tue, 18 December 2012 21:22
		Re: trivial problem: How do I change the axis scale in an image plot? By: David Fanning on Tue, 18 December 2012 21:03
		Re: trivial problem: How do I change the axis scale in an image plot? By: Balthasar Indermuehle on Tue, 18 December 2012 20:55
		Re: trivial problem: How do I change the axis scale in an image plot? By: Balthasar Indermuehle on Tue, 18 December 2012 20:41
		Re: trivial problem: How do I change the axis scale in an image plot? By: David Fanning on Tue, 18 December 2012 19:12

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