How to transfer pointcloud to mesh

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YE HUICHAO
YE HUICHAO 2011-11-11
编辑： KSSV 2023-9-27
I have got an obj file of a year. I want to transfer it to mesh.The file has two variables v and f. I don't know how to use commands like delaunay,trisurf,meshgrid to make it into mesh. Help?Has nayone done something sililiar before?

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回答（3 个）

Fangjun Jiang
Fangjun Jiang 2011-11-11
mesh is for 3-D data. If you only have v and f, I am not sure how do you want to present it in 3-D. However, if you have x, y and z data in a vector, this post might help you.
http://www.mathworks.com/matlabcentral/answers/20890-contour-plot-of-stresses-in-a-beam
Patrick Kalita
Patrick Kalita 2011-11-11
Perhaps v and f represent vertex and face information? If that is the case you can use the patch command. patch objects have the properties Vertices and Faces. Read the documentation to ensure you set these values using the right format; you may not be able to apply the variables v and f directly without some preprocessing.
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Patrick Kalita
Patrick Kalita 2011-11-15
If f is a 125731-by-3 array, it certainly has the right shape to describe how the faces are connected. Are all the values integers? They should be. You might want to also look at the minimum of the array to see if it is 0 -- if so you might need to add 1 to account for MATLAB's 1-based indexing.
Walter Roberson
Walter Roberson 2011-11-15
Please show us the first few rows of your F matrix.

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YE HUICHAO
YE HUICHAO 2011-11-14
I just need to know what is f which is a 125731*3 matrix and number in each row is the same. I need to find someway to create faces thus I can use patch command.Thanks.

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