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Re: Help plotting a 3D Carioid... [message #47591 is a reply to message #47498]

Wed, 15 February 2006 09:34

David Fanning
Messages: 11724
Registered: August 2001

Senior Member

Steve writes:

> Additionally, the surface plot just doesn't have a nice look - is there
> anything a bit nicer I could do, along the lines of xplot3D, but be
> able to do it in a pre-specified window (I'm going to be having the
> result plot in a GUI)? Best would be to have the surface shaded and
> with the color set to correspond with the magnitude of each point.
>
> I guess what I'm looking for is a little guidance on how to get this to
> look a bit nicer, and what's causing the hole when I use surface...

Hard to say what is happening to SURFACE. I note that
rotating the surface slightly gets around the problem:

surface, z, x, y, az=45

This is probably an artifact from the fact that it is
really a 2.5D representation of a surface. But, it looks
like a bug, for sure.

XPlot3D uses an object graphics surface (IDgrSurface), rather
than a direct graphics surface. This is a true 3D surface,
so I am not surprised this works correctly. You can
put an object graphics surface into an object graphics
window, but the whole process is quite a bit more
trouble than it is with direct graphics. :-)

If this is something you want to pursue, I'd recommend
getting ahold of Ronn Kling's book, Power Graphics in IDL.
The chances of learning to use object graphics from
the IDL documentation is slim and none, I believe, unless
you have some graphics experience from somewhere else.

Cheers,

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

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[Message index]

		Help plotting a 3D Carioid... By: Steve[3] on Wed, 15 February 2006 08:46
		Re: Help plotting a 3D Carioid... By: David Fanning on Wed, 15 February 2006 15:29
		Re: Help plotting a 3D Carioid... By: Steve[3] on Wed, 15 February 2006 14:36
		Re: Help plotting a 3D Carioid... By: David Fanning on Wed, 15 February 2006 09:34

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