Figure Properties - SERC

griddata3
2griddata3
Purpose Data gridding and hypersurface fitting for 3-D data
Syntax w = griddata3(x,y,z,v,xi,yi,zi)
w = griddata3(x,y,z,v,xi,yi,zi,method)
w = griddata3(x,y,z,v,xi,yi,zi,method,options)
Description w = griddata3(x, y, z, v, xi, yi, zi) fits a hypersurface of the form
w =
f( x, y, z)
to the data in the (usually) nonuniformly spaced vectors (x, y, z,
v). griddata3 interpolates this hypersurface at the points specified by
(xi,yi,zi) to produce w. w is the same size as xi, yi, and zi.
2-996
(xi,yi,zi) is usually a uniform grid (as produced by meshgrid) and is where
griddata3 gets its name.
w = griddata3(x,y,z,v,xi,yi,zi,method) defines the type of surface that is
fit to the data, where method is either:
'linear' Tesselation-based linear interpolation (default)
'nearest' Nearest neighbor interpolation
If method is [], the default 'linear' method is used.
w = griddata3(x,y,z,v,xi,yi,zi,method,options) specifies a cell array of
strings options to be used in Qhull via delaunayn.
If options is [], the default options are used. If options is {''}, no options are
used, not even the default.
Algorithm The griddata3 methods are based on a Delaunay triangulation of the data that
uses Qhull [2]. For information about Qhull, see http://www.qhull.org/. For
copyright information, see http://www.qhull.org/COPYING.html.
See Also delaunayn, griddata, griddatan, meshgrid
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. 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.