To generate vertice mesh from a series of contours
3 views (last 30 days)
Show older comments
Hello,
As beginner in MATLAB, now I have a series of contours, which define a structure. On each contour there are isolated points whose cartesian coordinates are known. Now I would like to generate a mesh from these contours (or points). The MyRobustCrust.m from file exchange does generate a mesh with faces, but without vertices' coordinates. And the vertices are needed for my calculation.
Does any one have any hints? Thank you very much.
Erhong
0 Comments
Accepted Answer
Sarah Wait Zaranek
on 22 Apr 2011
I believe this should work for you.
% Generating some contour data
x = rand(100,1)*4-2;
y = rand(100,1)*4-2;
z = x.*exp(-x.^2-y.^2);
scatter3(x,y,z,'b','filled')
hold on
% Calculating Triangulation
dt = DelaunayTri(x,y,z);
% Finding the surface boundary
[tri xf] = freeBoundary(dt);
trisurf(tri, xf(:,1),xf(:,2),xf(:,3), ...
'FaceColor','cyan', 'FaceAlpha', 0.8);
% Getting the vertices
t1v = xf(tri(:,1),:); %x,y,z for first point in triangles
t2v = xf(tri(:,2),:); %x,y,z for second point in triangles
t3v = xf(tri(:,3),:); %x,y,z for third point in triangles
vert = [t1v; t2v ;t3v];
scatter3(vert(:,1), vert(:,2), vert(:,3),'g','filled')
hold off
0 Comments
More Answers (0)
See Also
Categories
Find more on Contour Plots in Help Center and File Exchange
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!