MATLAB: Get mesh from surf function

meshsurf

Is there a way to get the mesh which the function "surf" produces? By that I mean I need the usual mesh format which is a list of vertices and a list of faces.

Best Answer

Yes, the surf2patch command.

[x,y,z] = peaks(10);
h = surf(x,y,z);
[f,v,c] = surf2patch(h);

At this point:

v is a 100x3 array containing the 100 vertices
f is an 81x4 array containing indices into v for the 81 faces
c is an vector of the 100 data values which would be used for coloring the vertices

Related Solutions

MATLAB: Convert patch isosurface to surf

Use griddata and meshgrid

MATLAB: How to plot a single valued function over a triangulated surface

You can do it with patch. You'll just want to set FaceColor to interp and set the FaceVertexCData to to value of your function.

But you might find it easier to use the trisurf function. Here's a simple example:

npts = 100;
x = 2*randn(npts,1);
y = 2*randn(npts,1);
z = peaks(x,y);
c = z;
tri = delaunay(x,y);
h = trisurf(tri,x,y,z,c,'FaceColor','interp');
colormap(parula(12))
axis tight

Best Answer

Related Solutions

MATLAB: Convert patch isosurface to surf

MATLAB: How to plot a single valued function over a triangulated surface

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