How to contour a 2D element mesh in MATLAB?

Asked Mar 03 '19 at 11:07

Active Mar 03 '19 at 12:14

Viewed 279 times

I'm trying to contour the output for some solution of groundwater diffusion in 2D finite element triangular mesh.

This is the code which I used:

%% 3d Surface plot of Ground water Head
tri= delaunay(x,y);
trisurf(tri,x,y,h);

title('Head Distribution');
xlabel('Distance along the X axis(m)');
ylabel('Distance along the Y axis(m)');
zlabel('Head(m)');
colorbar eastoutside;

This is the figure which is not working:

figure(2)
[c,hh] = contourf(tri,x,y,h,18); 
clabel(c,hh)
title('Tricontour')

edited Mar 03 '19 at 12:14

Sardar Usama

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asked Mar 03 '19 at 11:07

Hassan Saleem

There is no MATLAB inbuilt for tetrahedra contours. You'd need to interpolate into a regular grid and use `contour` or use the various available codes in the Mathworks FEX – Ander Biguri Mar 03 '19 at 12:27
It is not tetrahedra this is a simple triangular element, but the shape of the domain R2 is tetrahedra – Hassan Saleem Mar 04 '19 at 05:40
Sorry, I meant trianglulation, not tetrahedra. – Ander Biguri Mar 04 '19 at 09:30

How to contour a 2D element mesh in MATLAB?

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