tsearchn - N-D closest simplex search
Syntax
t = tsearchn(X,TES,XI)
[t,P] = tsearchn(X,TES,XI)
Description
t = tsearchn(X,TES,XI) returns
the indices t of the enclosing simplex of the Delaunay
tessellation TES for each point in XI. X is
an m-by-n matrix, representing m points
in N-dimensional space. XI is a p-by-n matrix,
representing p points in N-dimensional space. tsearchn returns NaN for
all points outside the convex hull of X. tsearchn requires
a tessellation TES of the points X obtained
from delaunayn.
[t,P] = tsearchn(X,TES,XI) also
returns the barycentric coordinate P of XI in
the simplex TES. P is a p-by-n+1 matrix.
Each row of P is the Barycentric coordinate of
the corresponding point in XI. It is useful for
interpolation.
Algorithm
tsearchn is based on Qhull [1]. For information
about Qhull, see http://www.qhull.org/.
For copyright information, see http://www.qhull.org/COPYING.txt.
See Also
DelaunayTri, tsearch
Reference
[1] Barber, C. B., D.P. Dobkin, and H.T. Huhdanpaa,
"The Quickhull Algorithm for Convex Hulls," ACM
Transactions on Mathematical Software, Vol. 22, No. 4,
Dec. 1996, p. 469–483.
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