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pdeprtni

Interpolate from triangle midpoint data to node data

pdeprtni is not recommended. Use interpolateSolution and evaluateGradient instead.

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, 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.

Caution

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

Introduced before R2006a

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