|MATLAB Function Reference|
Data gridding and hypersurface fitting for 3-D data
w = griddata3(x, y, z, v, xi, yi, zi)
fits a hypersurface of the form to the data in the (usually) nonuniformly spaced vectors (
griddata3 interpolates this hypersurface at the points specified by (
zi) to produce
w is the same size as
zi) is usually a uniform grid (as produced by
meshgrid) and is where
griddata3 gets its name.
w = griddata3(...,method)
defines the type of surface that is fit to the data, where
method is either:
|| Tesselation-based linear interpolation (default)
|| Nearest neighbor interpolation
griddata3 methods are based on a Delaunay triangulation of the data that uses Qhull . This triangulation uses the Qhull joggle option (
'QJ'). For information about Qhull, see http://www.geom.umn.edu/software/qhull/. For copyright information, see http://www.geom.umn.edu/software/download/COPYING.html.
 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. Available in HTML format at http://www.acm.org/pubs/citations/journals/toms/1996-22-4/p469-barber/ and in PostScript format at ftp://geom.umn.edu/pub/software/qhull-96.ps.
 National Science and Technology Research Center for Computation and Visualization of Geometric Structures (The Geometry Center), University of Minnesota. 1993.