Partial Differential Equations Toolbox    
pdeprtni

Interpolate from triangle midpoint data to node data.

Synopsis

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. Details on the mesh data representation can be found in the entry on initmesh.

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

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

See Also
assempde, initmesh, pdeintrp


pdepoly pderect