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Re: IDL 8.2.2 released [message #83138 is a reply to message #83056] Wed, 06 February 2013 04:29 Go to previous messageGo to previous message
lecacheux.alain is currently offline  lecacheux.alain
Messages: 325
Registered: January 2008
Senior Member
Le mardi 5 février 2013 18:39:54 UTC+1, Mark Piper a écrit :
> I'm happy to announce that IDL 8.2.2 is available for download from our website, www.exelisvis.com. I have a short write-up of what's new on the IDL blog:
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> http://idldatapoint.com/2013/02/05/idl-8-2-2-released/
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> including a link to download a set of example programs.
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> mp

By running with 8.2.2 a program recently developed with 8.2.1, I can see a spectacular improvement in speed when using NG graphics.
Here is an excerpt involving a scatter plot of about 1500000 data points.
Now, NG appears to be even faster than DG !

IDL> tic & pl = plot(st[3,*], /XLOG, sqrt(total(st[0:2,*]^2, 1))/st[3,*], $
IDL> /YLOG, SYMBOL='dot', YRANGE=[1e-3,1e3], LINESTYLE=6) & toc
% Time elapsed: 5.3750000 seconds.

IDL> tic & plot, st[3,*], /XLOG, sqrt(total(st[0:2,*]^2, 1))/st[3,*], $
IDL> /YLOG, PSYM=3, YRANGE=[1e-3,1e3] & toc
% Time elapsed: 6.3440001 seconds.

alain.
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