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Re: 8.* graphics [message #78971 is a reply to message #78970]

Tue, 17 January 2012 10:29

David Fanning
Messages: 11724
Registered: August 2001

Senior Member

David Fanning writes:

>
> Russell writes:
>
>> UPDATE: I tried a variant of a trick by David F., but for the y-axis
>> http://www.idlcoyote.com/tips/another_yaxis.html . For some kooky
>> reason, as soon as I use the axis.pro (function not procedure), the
>> colors and transparency immediately go away. GRRR!!!
>
> Here is some code that worked surprisingly well!
>
> pos = [0.125, 0.15, 0.9, 0.875]
> x = findgen(101)
> y1 = cgDemoData(17)
> y2 = cgDemoData(17)
> cgPlot, x, y1, /NoData, Position=pos, xtickformat='(A1)', $
> ytickformat='(A1)'
> cgColorfill, [x[0],x,x[-1]], [!Y.Crange[0], y1,!Y.Crange[0]], $
> /data, color='yellow'
> p1 = cgsnapshot()
> cgerase
> cgPlot, x, y2, /NoData, Position=pos, xtickformat='(A1)', $
> ytickformat='(A1)'
> cgColorfill, [x[0],x,x[-1]], [!Y.Crange[0], y2,!Y.Crange[0]], $
> /data, color='olive'
> p2 = cgsnapshot()
> cgblendimage, p1, p2
> cgPlot, x, y1, thick=2, /Noerase, Position=pos
> cgplot, x, y2, /Overplot, thick=2
> END

Sorry, I meant to do that with log plots. :-)

pos = [0.125, 0.15, 0.9, 0.875]
x = findgen(101)+1
y1 = cgDemoData(17)
y2 = cgDemoData(17)
cgPlot, x, y1, /NoData, Position=pos, xtickformat='(A1)', $
ytickformat='(A1)', /Xlog, xrange=[1,100]
cgColorfill, [x[0],x,x[-1]], [!Y.Crange[0], y1,!Y.Crange[0]], $
/data, color='yellow'
p1 = cgsnapshot()
cgerase
cgPlot, x, y2, /NoData, Position=pos, xtickformat='(A1)', $
ytickformat='(A1)', /XLog, xrange=[1,100]
cgColorfill, [x[0],x,x[-1]], [!Y.Crange[0], y2,!Y.Crange[0]], $
/data, color='olive'
p2 = cgsnapshot()
cgblendimage, p1, p2
cgPlot, x, y1, thick=2, /Noerase, Position=pos, /XLog, xrange=[1,100]
cgplot, x, y2, /Overplot, thick=2, /XLog
END

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: 8.* graphics By: Russell[1] on Tue, 17 January 2012 11:56
		Re: 8.* graphics By: lecacheux.alain on Tue, 17 January 2012 10:54
		Re: 8.* graphics By: David Fanning on Tue, 17 January 2012 11:05
		Re: 8.* graphics By: Russell[1] on Tue, 17 January 2012 10:55
		Re: 8.* graphics By: David Fanning on Tue, 17 January 2012 10:33
		Re: 8.* graphics By: David Fanning on Tue, 17 January 2012 10:29
		Re: 8.* graphics By: David Fanning on Tue, 17 January 2012 10:22
		Re: 8.* graphics By: Russell[1] on Tue, 17 January 2012 09:47
		Re: 8.* graphics By: David Fanning on Tue, 17 January 2012 09:53

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