Dear all:

I want to interpolate a given function f(x,y) on a two dimensional grid. I have the values of funtion on grid points. I want to interpolate the value of funtion, its fist derivative w.r.t x and y, its second drivative w.r.t. x and y, and mixed derivative at a known point in the grid.

Is there any good reference or test code?Please help me. thanks you!

www.netlib.org

i can't find the code in that web! anybody else can help me?

Hi,

I have used Matlab cubis spline interpolation. It's work well.

Margarita.

I don't happen to be up to date anymore, but maybe you can find something at:

http://www.nr.com/

Or on the free online part:

http://www.nrbook.com/a/bookfpdf/f3-6.pdf

It's good old Fortran 77 and includes a short explanation about how stuff works.

[IRP]

Hello every one

I want to interpolate a given points(x,y,z) on a three dimensional grid by fortran or C++.
Can anyone point to me about the interpolating splines in 3D space coding procedure by FORTRAN or C++.

Thanks