MATLAB Function Reference Volume 1: A - E - Bad Request

dsearch
2dsearch
Purpose Search for nearest point
Syntax K = dsearch(x,y,TRI,xi,yi)
K = dsearch(x,y,TRI,xi,yi,S)
Description K = dsearch(x,y,TRI,xi,yi) returns the index into x and y of the nearest
point to the point (xi,yi). dsearch requires a triangulation TRI of the points x,y
obtained using delaunay.Ifxi and yi are vectors, K is a vector of the same size.
2-464
K = dsearch(x,y,TRI,xi,yi,S) uses the sparse matrix S instead of
computing it each time:
S = sparse(TRI(:,[1 1 2 2 3 3]),TRI(:,[2 3 1 3 1 2]),1,nxy,nxy)
where nxy = prod(size(x)).
See Also delaunay, tsearch, voronoi