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Re: Y-Axis: Negitive numbers on top [message #1531 is a reply to message #1529]

Tue, 30 November 1993 13:14

deutsch
Messages: 19
Registered: February 1992

Junior Member

In article 301193095555@bundy.aero.org, Ann_Mazuk@qmail2.aero.org (Ann Mazuk) writes:

> I am running IDL 3.1.0 using VAX/VMS. I am making a plot and on the y-axis
> I want negative numbers to be near the top of the y-axis and positive
> numbers to be near the bottom of the y-axis, such that it looks similar to
> this:
>
>
> -3 |
> -2 |
> -1 |
> 0 |
> 1 |
> 2 |__________________________
> 1 2 3 4 5 6 7 8 9 10

The initial solution is simply to use something like:

IDL> plot,indgen(10)-8,yrange=[2,-10]

The tricky part comes when you want to have automatic Y scaling and have it
reversed. An ugly solution is:

IDL> plot,indgen(10)-8
IDL> plot,indgen(10)-8,yr=[!y.crange([1,0])]

Anyone have a better solution?

Eric

Eric Deutsch Email: deutsch@astro.washington.edu
Department of Astronomy FM-20 Voice: (206) 543-1979, 2922
University of Washington FAX: (206) 685-0403
Seattle, WA 98195 Johnson Hall, Room 226

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[Message index]

		Re: Y-Axis: Negitive numbers on top By: landers on Wed, 01 December 1993 15:00
		Re: Y-Axis: Negitive numbers on top By: Ann_Mazuk on Tue, 30 November 1993 15:13
		Re: Y-Axis: Negitive numbers on top By: deutsch on Tue, 30 November 1993 13:14

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