Provided by: librheolef-dev_7.0-3_amd64
NAME
interpolate - Lagrange interpolation of a function
DESCRIPTION
The function interpolation implements the Lagrange interpolation of a function or a class-function.
SYNOPSIS
template <class Function> field interpolate (const space& Xh, const Function& f);
EXAMPLE
The following code compute the Lagrange interpolation pi_h_u of u(x). Float u(const point& x); ... geo omega("square"); space Xh (omega, "P1"); field pi_h_u = interpolate (Xh, u);
ADVANCED EXAMPLE
It is possible the replace the function u by a variable of the field type that represents a picewise polynomial function: this invocation allows the reinterpolation of a field on another mesh or with another approximation. geo omega2 ("square2"); space X2h (omega2, "P1"); field uh2 = interpolate (X2h, pi_h_u);
COPYRIGHT
Copyright (C) 2000-2018 Pierre Saramito <Pierre.Saramito@imag.fr> GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>. This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law.