Partial Differential Equation Toolbox | ![]() ![]() |
The gradient of a PDE solution
Syntax
Description
[ux,uy]=pdegrad(p,t,u)
returns the gradient of u
evaluated at the center of each triangle.
Row i from 1 to N of 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. For details on the mesh data representation, see initmesh
.
For a description of the format for the solution vector u
, see assempde
.
The optional argument sdl
restricts the computation to the subdomains in the list sdl
.
See Also
![]() | pdegplot | pdeintrp | ![]() |