Partial Differential Equation Toolbox™

pdeprtni - Interpolate from triangle midpoint data to node data

Syntax

un=pdeprtni(p,t,ut)

Description

un=pdeprtni(p,t,ut) gives linearly interpolated values at node points from the values at triangle midpoints.

The geometry of the PDE problem is given by the mesh data p and t. For details on the mesh data representation, see initmesh.

Let N be the dimension of the PDE system, n_p the number of node points, and n_t the number of triangles. The components of triangle data in ut are stored as N rows of length n_t. The components of the node data are stored in un as N columns of length n_p.

Caution

pdeprtni and pdeintrp are not inverse functions. The interpolation introduces some averaging.

See Also

pdepoly

pderect