debian man page for interpolate

interpolate(4rheolef)						    rheolef-6.1 					     interpolate(4rheolef)

NAME
       interpolate - Lagrange interpolation of a function

DESCRIPTION
	The function interpolation implements the
	Lagrange interpolation of a function or a class-function.

SYNOPSYS
	template <class Function>
	field interpolate (const space& Vh, 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);

IMPLEMENTATION
       template <class T, class M, class Function>
       inline
       field_basic<T,M>
       interpolate (const space_basic<T,M>& V, Function f)

rheolef-6.1							    rheolef-6.1 					     interpolate(4rheolef)