How to present OBJ file (read as a mesh file) in a contour plot?

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Colin Hollar
Colin Hollar 2018-10-10
编辑： Colin Hollar 2018-10-10
I have collected some scans (file format of model from the scanner: .obj, .mtl and .jpg). I am able to read the files as a 3D mesh, and am looking for ways I can create a contour plot under the mesh

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回答（2 个）

ANKUR KUMAR
ANKUR KUMAR 2018-10-10
An example of creating a mesh is here,
[X,Y] = meshgrid(-5:.2:5);
R = sqrt(X.^2 + Y.^2);
Z = sin(R)./R;
mesh(X,Y,Z)
  2 个评论
KSSV
KSSV 2018-10-10
@ ANKUR KUMAR the user already able to plot the mesh..he wants the contour plot.
@ Colin Hollar attach one sample file...it can be done.

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KSSV
KSSV 2018-10-10
This should work out:
obj = readObj(fname) ;
p = obj.v ;
t = obj.f ;
N = 10 ;
[c,h]=tricontour(t,p(:,1),p(:,2),p(:,3),N) ;
Get the tricontour function from the file exchange: https://in.mathworks.com/matlabcentral/fileexchange/38858-contour-plot-for-scattered-data?focused=5249779&tab=function
  1 个评论
KSSV
KSSV 2018-10-10
I think you should draw mesh for that, try:
trisurf(t,p(:,1),p(:,2),p(:,3))
As your question was plotting contours...I gave code for contours. Also change the value of N and try. Increase the value of N.

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