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Re: Is there a way to plot with axis breaks in IDL? [message #70345]

Sat, 03 April 2010 11:21

mankoff
Messages: 131
Registered: March 2004

Senior Member

On Apr 2, 6:12 am, David Fanning <n...@dfanning.com> wrote:
>
> I've made plots like this before. It is not particularly
> difficult to do *a* plot. It is more difficult to write
> this kind of functionality in a general way.
>

I think I just came up with a fairly generic implementation here:
http://code.google.com/p/kdm-idl/source/browse/trunk/plotbre ak.pro

For example I was able to produce the following graphic (including
equivalent of OPLOT command) with the following two lines of code.
http://kenmankoff.com/tmp/plotbreak.png

plotbreak, time, p, $
position=pos, $
xrange0=[0,1000], $
xrange1=[1000,3000], $
breakpct=66, $
key0={ytitle:'Population (Phytoplankton)', $
xtitle:'Time (days)', $
xtickn:['0','20','40','60','80',' '],$
title:'Predator v. Prey', $
thick:2}, $
key1={xtitle:'Time (days)', $
yst:5,thick:2,$
xtickn:['100','150','200','250','300'] }

plotbreak, time, z, $
position=pos, $
breakpct=66, $
xrange0=[0,1000], $
xrange1=[1000,3000], $
key0={NOERASE:1,color:253,thick:3,yst:5,xst:5}, $
key1={color:253,thick:3,xst:5,$
ytitle:'Population (Zooplankton)'}

A truly generic algorithm, which would be difficult, would be
recursive and let me specify BREAKPCT=[10,30,80,90,95] rather than
just as a single percentage (66% in the above example). It should also
be recursive in X and Y. That algorithm, when complete, could then
easily be used to draw, for example, a calendar with the weekends
(first and last column) thinner than the middle weekdays. I'll leave
that as an exercise to the reader.

-k.

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[Message index]

		Re: Is there a way to plot with axis breaks in IDL? By: mankoff on Sat, 03 April 2010 11:21
		Re: Is there a way to plot with axis breaks in IDL? By: David Fanning on Fri, 02 April 2010 06:12
		Re: Is there a way to plot with axis breaks in IDL? By: d.poreh on Fri, 02 April 2010 05:34
		Re: Is there a way to plot with axis breaks in IDL? By: mankoff on Thu, 01 April 2010 20:57
		Re: Is there a way to plot with axis breaks in IDL? By: fututre.keyboard on Thu, 08 April 2010 00:33
		Re: Is there a way to plot with axis breaks in IDL? By: mankoff on Wed, 07 April 2010 09:08

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