bivar, a FORTRAN90 code which interpolates scattered bivariate data, by Hiroshi Akima.
The code accepts a set of (X,Y) data points scattered in 2D, with associated Z data values, and is able to construct a smooth interpolation function Z(X,Y), which agrees with the given data, and can be evaluated at other points in the plane.
The code is a version of ACM TOMS Algorithm 526.
The original, true, correct version of ACM TOMS 526 is available in the TOMS subdirectory of the NETLIB web site.
The computer code and data files described and made available on this web page are distributed under the GNU LGPL license.
bivar is available in a FORTRAN90 version.
TOMS526, a FORTRAN90 code which is the original version of the algorithm implemented in BIVAR.
TOMS660, a FORTRAN90 code which takes scattered 2D data and produces an interpolating function F(X,Y), this is a FORTRAN90 version of ACM TOMS algorithm 660, called qshep2d, by Robert Renka.
TOMS661, a FORTRAN90 code which takes scattered 3D data and produces an interpolating function F(X,Y,Z), this is a FORTRAN90 version of ACM TOMS algorithm 661, called qshep3d, by Robert Renka.
TOMS790,
a FORTRAN90 code which
computes an interpolating function to a set of scattered data in the plane;
this code is commonly called CSHEP2D;
by Robert Renka;
this is ACM TOMS algorithm 790.
TOMS792,
a FORTRAN90 code which
tests functions that interpolate scattered data in the plane;
by Robert Renka;
this is ACM TOMS algorithm 792.
TOMS886, a FORTRAN90 code which defines the Padua points for interpolation in a 2D region, including the rectangle, triangle, and ellipse, by Marco Caliari, Stefano de Marchi, Marco Vianello. This is ACM TOMS algorithm 886.
The FORTRAN77 version of BIVAR is by Hiroshi Akima. The translation to FORTRAN90 was done by John Burkardt.