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Re: Plotting 3D array as a 'cloud' [message #78006 is a reply to message #77809]

Sun, 09 October 2011 21:10

Michael Galloy
Messages: 1114
Registered: April 2006

Senior Member

Robin Wilson <robin@rtwilson.com> wrote:
> Hi all,
>
> I've got a 3D array in IDL that contains a model of a cloud - that is,
> each cell is either 0 (not cloud) or 1 (cloud). I'd like to plot this in
> a 3D way, so that it looks like a cloud. I'm not quite sure how else to
> describe it - but I'd like to be able to see the cloud as a 3D model - so
> it just looks like a cloud shaped 'blob' - if possible one that can be rotated.
>
> I'm not quite sure how to go about this. I don't want to do a surface
> plot - because I want all sides of the cloud not just the top surface. I
> guess some sort of 3D point plot would be ok, but I want to see the cloud
> as a solid blob, not as points with gaps between them.
>
> I'm a little confused by the range of IDL procedures which can be used to
> plot things like this, and am not really sure which is best to try and use.
>
> Any suggestions?

I would suggest using ISOSURFACE to get vertices and connectivity. Then
create an IDLgrPolygon from that (or use function graphics). Use XOBJVIEW
to display if you don't want to create your own object graphics hierarchy.

Mike
--
www.michaelgalloy.com Research Mathematician Tech-X Corporation

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[Message index]

		Plotting 3D array as a 'cloud' By: Robin Wilson on Sun, 09 October 2011 14:22
		Re: Plotting 3D array as a 'cloud' By: Robin Wilson on Sat, 15 October 2011 05:14
		Re: Plotting 3D array as a 'cloud' By: Mark Piper on Mon, 10 October 2011 12:26
		Re: Plotting 3D array as a 'cloud' By: Karl[1] on Mon, 10 October 2011 10:48
		Re: Plotting 3D array as a 'cloud' By: Michael Galloy on Sun, 09 October 2011 21:10
		Re: Plotting 3D array as a 'cloud' By: David Fanning on Sun, 09 October 2011 17:57
		Re: Plotting 3D array as a 'cloud' By: Matt Francis on Sun, 09 October 2011 17:41

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