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Re: Colorbar Thinking in the Shower [message #77564]

Tue, 13 September 2011 13:30

David Fanning
Messages: 11724
Registered: August 2001

Senior Member

Mark Piper writes:

> Here's an example of displaying two plots with differing ranges,
> referenced by a single colorbar. It suffers from the same drawbacks as
> the other examples I've posted, but maybe it can be a starting point
> for discussion.

OK, perhaps I am just too handicapped by not being
able to use the TICKNAME keyword, but I think you
and I probably agree that the *default* labeling of
the color bar is only suited for a particular data set,
namely the target of the color bar.

But, we probably also agree that the colors in the
color bar are also completely arbitrary and the
labeling of those colors can be anything we want it
to be. You label with TICKNAME, I have to do it in
a different way because TICKNAME crashes my machine.

But, since the labeling is arbitrary, and thus there
is no particular need to attach the color bar to a
particular target (which in my view just causes
massive user confusion), why don't you just allow
the user to specify a color bar range with the
color bar itself? Why "attach" it to something when
that almost always causes you to have to modify the
color bar range with the TICKNAME keyword? (At least
when you are comparing two different data sets.) Using
TICKNAME is onerous because you make the user format
and create strings for the labels of the (nearly
always?) incorrect tick mark values.

Cheers,

David

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

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[Message index]

		Re: Colorbar Thinking in the Shower By: David Fanning on Tue, 13 September 2011 13:30
		Re: Colorbar Thinking in the Shower By: Mark Piper on Tue, 13 September 2011 13:05
		Re: Colorbar Thinking in the Shower By: David Fanning on Tue, 13 September 2011 09:30
		Re: Colorbar Thinking in the Shower By: Mark Piper on Wed, 14 September 2011 08:13

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