Volume under the surface of a 3-D plot: pdetool box

I used matlab pdetool box to model 2-D diffusion equation. 3-D plot was generated for the distrbution of concentration at a given time. Now I want to calculate the volume under the surface to get the total mass. I can export solution, u , and mesh parameters, p, t, e, to workspace. How do I calculate volume using these parameters?

Thank you

kodi

Answer 1

[Chandana]

I found a way to do this at:

http://web.mit.edu/2.51/matlab/bredq.m

More methos are welcome.

Thank you