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Re: Reversing an axis with IDLgrAxis [message #14194]

Tue, 02 February 1999 00:00

Peter Connell
Messages: 6
Registered: November 1998

Junior Member

An update:

Mark Hadfield's solution is a very neat one and he identifies the actual
problem, which is that the Axis object always plots from smaller to larger
in the conventional positive direction. So I think the answer to Wayne
Baggett's suggestion is that there is no way to do that in object graphics.
Mark uses a Property of the Axis object which appears to have a somewhat
different intention to accomplish the desired result, although it requires
that the data and coordinate be manipulated outside of the object's
knowledge, which somewhat defeats the purpose of objects, I guess.
Unfortunately, Mark's solution doesn't work for my exat problem, since I was
trying to reverse a logarithmic axis. Applying Mark's approach produces
readable ticks and title, but now the log-spaced minor ticks are backwards!

Peter Connell wrote in message <795h53$75m$1@lll-winken.llnl.gov>...
> OK, I give. I would like to plot an axis (object graphics) with values
> descending rather than ascending in the normal positive direction. I can do
> this using (XY)COORD_CONV, but when I do, the tick text and axis title are
> reversed as well (mirror image) and I can't figure out how to reverse them
> back to read normally.
> Any help?
>
> Peter Connell
> connell2@llnl.gov
>
>
>

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[Message index]

		Re: Reversing an axis with IDLgrAxis By: Peter Connell on Tue, 02 February 1999 00:00
		Re: Reversing an axis with IDLgrAxis By: Wayne Baggett on Tue, 02 February 1999 00:00
		Re: Reversing an axis with IDLgrAxis By: Mark Hadfield on Tue, 02 February 1999 00:00
		Re: Reversing an axis with IDLgrAxis By: davidf on Mon, 01 February 1999 00:00

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