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Re: Plotting 3D array as a 'cloud' [message #78007 is a reply to message #77809]

Sun, 09 October 2011 17:57

David Fanning
Messages: 11724
Registered: August 2001

Senior Member

Robin Wilson writes:

> 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.

I would try a 3D scatter plot first. Depending on how
many points you have, the code here might be pretty slow.
There might be some ways to speed it up, if we knew
more about the problem.

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

Cheers,

David

--
David Fanning, Ph.D.
Fanning Software Consulting, Inc.
Coyote's Guide to IDL Programming: http://www.dfanning.com/
Sepore ma de ni thue. ("Perhaps thos speakest truth.")

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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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