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reversing axes ranges with IDL 8 graphics [message #86167]

Tue, 15 October 2013 16:38

Ryan Goldsbury
Messages: 1
Registered: October 2013

Junior Member

I've recently tried to transition from the old style of plotting to the "function graphics" introduced in IDL 8. I very quickly ran into a problem of not being able to recreate plots that were very simple to handle under the previous system.

x=findgen(101)*2*!pi/100
y=sin(x)

plot,x,y,xrange=[0,2*!pi],yrange=[-1,1],psym=3

If I wanted to reverse the direction of the y-axis, this was very simple, and covered here http://www.idlcoyote.com/graphics_tips/reverse_y.html :

plot,x,y,xrange=[0,2*!pi],yrange=[1,-1],psym=3

But when I try do this with IDL 8 graphics, the order of the two-element yrange vector seems to be irrelevant as these two commands produce identical plots:

p=plot(x,y,xrange=[0,2*!pi],yrange=[1,-1],'.')
p=plot(x,y,xrange=[0,2*!pi],yrange=[-1,1],'.')

Is there a simple way to reverse axes directions like this using the new system?

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[Message index]

		reversing axes ranges with IDL 8 graphics By: Ryan Goldsbury on Tue, 15 October 2013 16:38
		Re: reversing axes ranges with IDL 8 graphics By: David Fanning on Tue, 15 October 2013 16:50
		Re: reversing axes ranges with IDL 8 graphics By: chris_torrence@NOSPAM on Wed, 16 October 2013 20:38

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