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Re: Shapefile Woes [message #77821]

Thu, 06 October 2011 10:43

David Fanning
Messages: 11724
Registered: August 2001

Senior Member

David Fanning writes:

> Here are the numbers for IDL 8.1:
>
> loop: 9.566 seconds
> destroy object: 0 seconds
> destroy entities: 0.009 seconds
>
> I guess I could live with that! There must be a lession
> in here somewhere! :-)

Even now most of the time is spent drawing polygons
that are too small to be seen on this global scale.
So, I have added a MinNumVerts keyword to DrawShapes
so that you can set the minimum number of vertices
a polygon has to have to be drawn. With this in
place, this intermediate resolution GSHHS shapefile
renders almost instantaneously. :-)

Sorry to cause so much alarm. ;-)

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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		Re: Shapefile Woes By: David Fanning on Thu, 06 October 2011 10:43
		Re: Shapefile Woes By: David Fanning on Thu, 06 October 2011 10:27
		Re: Shapefile Woes By: David Fanning on Thu, 06 October 2011 09:52
		Re: Shapefile Woes By: David Fanning on Thu, 06 October 2011 09:14

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