MATLAB: Create a mesh from a matrix

mesh

Hi everyone, I think this question will be really easy for a lot of people here, but this is the first time I need to mesh something and I am lost.

I have a matrix n*n with value 1 and 0 only. I would like to find a mesh for this matrix. I don't want to plot anything ! All the 'mesh tools' I found are just plotting curves in different way. I want vectors/matrix as output, with the coordinates of every nodes.

Could you help me and tell me which function I can use for that ?

Thank a lot.

Best Answer

 A "node" is simply a matrix location containing a 1? If so, use the FIND command (with 2 output args).

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MATLAB: Is it possible to find connectivity of part of a FE mesh with only nodal information

I solved it.

Create an zero array where the indices represent the nodal numbers, set the nodal numbers of inclusions to 1.

Loop over all elements, if all nodes of an element has a 1 in the array, add this element to the connectivity list.

MATLAB: How to generate a mesh

[X,Y] = ndgrid(1:6, 1:21);
Z = rand(size(X));
mesh(X, Y, Z);

Best Answer

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MATLAB: Is it possible to find connectivity of part of a FE mesh with only nodal information

MATLAB: How to generate a mesh

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