Extract Gridded Data from Isosurface
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I want to get the x, y and z data of a surface that I extract from a volume via isosurface. I am doing it in the following way, but I suspect that it's horribly inefficient (because I cannot believe there isn't a more straightforward way) and possibly inaccurate because of some of the results I have been getting. Can anyone suggest a simplier way?
I want the data at points given by (just an example):
[x,y] = meshgrid(linspace(0,10,30),linspace(0,10,30))
The data is available from this:
[faces,verts] = isosurface(Xa, Ya, Za, data, 0);
Then I am doing this to get the surface on the coordinates I want (x,y):
[X1,Y1,Z1] = xyz2grid(verts(:,1),verts(:,2),verts(:,3));
MySurface = interp2(X1,Y1,Z1,x,y);
NaNres = sum(isnan(MySurface(:)));
if NaNres > 0
MySurface = inpaint_nans(MySurface,3);
end
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darova
2021 年 3 月 25 日
What about standard functions?
[faces,verts] = isosurface(mesh_xs{:}, mesh_data, 0);
zz = griddata(verts(:,2),verts(:,1),verts(:,3),xx,yy);
surf(xx,yy,zz)
Are you sure that the order xx and yy is correct?
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