| Partial Differential Equations Toolbox | |
The gradient of a PDE solution.
[ux,uy]=pdegrad(p,t,u) [ux,uy]=pdegrad(p,t,u,sdl)
Description
[ux,uy]=pdegrad(p,t,u)
returns the gradient of u evaluated at the center of each triangle.
ux contains
row i from 1 to N of uy contains
There is one column for each triangle in t in both ux and uy.
The geometry of the PDE problem is given by the mesh data p and t. Details on the mesh data representation can be found in the entry on initmesh.
The format for the solution vector u is described in assempde.
The optional argument sdl restricts the computation to the subdomains in the list sdl.
See Also
assempde
| pdegplot | pdeintrp | |