Thread Subject: plot a surface bounding a set of points in 3-D?

Hi,

I have a 3-D scatter plot of points (each point has an x,y,z
coordinate on a regularly spaced grid). The points are organized into
clumps (as opposed to be randomly scattered). Rather than using plot3
to visualize the clumps as collections of points, is it possible to
plot a smooth surface that bounds these points instead?

I've tried the method in "doc surf", but it creates more like a
"height map" with the Z-axis, rather than bounding surfaces.

Thanks,

-Ben

Ben <jbenjam@gmail.com> wrote in message <e9f68a81-9fbf-4720-81ac-58892770d35f@g23g2000vbr.googlegroups.com>...
>
> Hi,
>
> I have a 3-D scatter plot of points (each point has an x,y,z
> coordinate on a regularly spaced grid). The points are organized into
> clumps (as opposed to be randomly scattered). Rather than using plot3
> to visualize the clumps as collections of points, is it possible to
> plot a smooth surface that bounds these points instead?
>
> I've tried the method in "doc surf", but it creates more like a
> "height map" with the Z-axis, rather than bounding surfaces.
>
> Thanks,
>
> -Ben

http://giaccariluigi.altervista.org/blog/

http://www.mathworks.com/matlabcentral/fileexchange/22185

http://www.mathworks.com/matlabcentral/fileexchange/22595

http://www.mathworks.com/matlabcentral/fileexchange/23447