MATLAB Function Reference
pdeval

Evaluate the numerical solution of a PDE using the output of `pdepe`

Syntax

• ```[uout,duoutdx] = pdeval(m,xmesh,ui,xout)
```

Arguments

 `m` Symmetry of the problem: slab = `0`, cylindrical = `1`, spherical = `2`. This is the first input argument used in the call to `pdepe`. `xmesh` A vector [`x0`, `x1`, ..., `xn`] specifying the points at which the elements of `ui` were computed. This is the same vector with which `pdepe` was called. `ui` A vector `sol`(`j`,:,`i`) that approximates component `i` of the solution at time and mesh points `xmesh`, where `sol` is the solution returned by `pdepe`. `xout` A vector of points from the interval [`x0`,`xn`] at which the interpolated solution is requested.

Description

```[uout,duoutdx] = pdeval(m,x,ui,xout) ``` approximates the solution and its partial derivative at points from the interval [`x0`,`xn`]. The `pdeval` function returns the computed values in `uout` and `duoutdx`, respectively.

 Note    `pdeval` evaluates the partial derivative rather than the flux . Although the flux is continuous, the partial derivative may have a jump at a material interface.

`pdepe`