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From: Zeph Davies on 25 Jan 2010 11:40
Hi,

I have a m-by-3 matrix, where m is the number of rows, the 3 values are the x, y and z values of a point on a surface in 3D space.

eg:
....
27 23 12
45 54 76
29 34 45
....

I would like to be able to plot these points as a surface, using the mesh() function, or preferably the trimesh() function. Possibly the isosurface() function may also be of interest.

However i'm struggling to put the correct data into the functions for it to plot.

I know that mesh can cope with 3D objects, for example a sphere, for it is in the help under surf(). My 3D object is more complex than a sphere, but the principles should be the same.

Thank you.
From: Zeph Davies on 25 Jan 2010 11:48
Additional:
Matrix is N-by-3:
trisurf(N, Matrix(:,1), Matrix(:,2), Matrix(:,3))
From: Luigi Giaccari on 7 Feb 2010 04:56
"Zeph Davies" <matlab(a)zephmail.co.uk> wrote in message <hjkhhl$fib$1(a)fred.mathworks.com>...
> Hi,
>
> I have a m-by-3 matrix, where m is the number of rows, the 3 values are the x, y and z values of a point on a surface in 3D space.
>
> eg:
> ...
> 27 23 12
> 45 54 76
> 29 34 45
> ...
>
> I would like to be able to plot these points as a surface, using the mesh() function, or preferably the trimesh() function. Possibly the isosurface() function may also be of interest.
>
> However i'm struggling to put the correct data into the functions for it to plot.
>
> I know that mesh can cope with 3D objects, for example a sphere, for it is in the help under surf(). My 3D object is more complex than a sphere, but the principles should be the same.
>
> Thank you.

http://www.advancedmcode.org/how-to-plot-a-coloured-surface-from-3d-scatter.html

http://www.advancedmcode.org/surface-recostruction-from-scattered-points-cloud-mycrustopen.html

http://www.advancedmcode.org/surface-recostruction-from-scattered-points-cloud-mycrust-robust.html



http://www.advancedmcode.org
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