Contour from mesh or grid

I'm doing some work using FEM (Finite Element Method) with triangular elements.

Questions will remain simple for those who have no clue what FEM is.

I got a m*2 matrix "Nodes" with x,y (for each point/node), a n*3 matrix "Elements" each line representing a triangle (element) referencing 3 points from previous matrix and finally i got a m*1 vector "U" that refers to z index of each node.

With "Nodes" and "Elements" i triplot the mesh, adding "U" i can trisurf it and i'd like to show that data with contour() too. But i get an error saying that Z must be a m*2. Any way arround this?

[KSSV]

Attach the data in a mat file.....

[Mortis]

Data may vary in number depending on user input but its always stored in this matrices structure. WS.mat file attached to original post.

Thank you

Answer 1

[KSSV]

Have a look in the following function: http://in.mathworks.com/matlabcentral/fileexchange/10408-contours-for-triangular-grids

[Mortis]

I'll accept this answer as it pointed me in the right direction although the similar approach by Duane Hanselman is working better. At least for my data structure.

Thank you

[Yamina chbak]

@KSSV If I have function z defined on quadrilateral element meshes, what I do ?. Thank you