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Re: Basics of SHADE_VOLUME [message #43366 is a reply to message #43359]

Thu, 07 April 2005 12:44

David Fanning
Messages: 11724
Registered: August 2001

Senior Member

Leslie Welser writes:

> Can someone describe to me the basics of using SHADE_VOLUME and
> POLYSHADE (in direct graphics)? I have a 3-d array which is
> (192,192,192), and I thought that using shade_volume would allow me to
> display the x-y-z grid along the 3 axes and then the magnitude of each
> particular point could be displayed as a color.

No, not even close, really. Shade_Volume generally
produces something that looks more like what a forensic
anthropologist would come up with if he discovered a
7 million old jaw bone in the desert and wanted a head
to go with it, than what you describe.

> What I'm confused
> about is the isosurface I should choose.

I'm confused about what it is you really want to plot.
It sounds more like a 3D scatter plot to me. Here is an
example of one of those. Is this what you had in mind?

http://www.dfanning.com/tips/scatter3d.html

Cheers,

David
--
David Fanning, Ph.D.
Fanning Software Consulting, Inc.
Coyote's Guide to IDL Programming: http://www.dfanning.com/

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		Re: Basics of SHADE_VOLUME By: David Fanning on Thu, 07 April 2005 14:41
		Re: Basics of SHADE_VOLUME By: Leslie Welser on Thu, 07 April 2005 14:22
		Re: Basics of SHADE_VOLUME By: David Fanning on Thu, 07 April 2005 12:44

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