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Two dimensional cubic spline interpolation

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Old   October 29, 2007, 12:17
Default Two dimensional cubic spline interpolation
  #1
flappingwing2008
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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!

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Old   October 29, 2007, 12:33
Default Re: Two dimensional cubic spline interpolation
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Harish
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www.netlib.org
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Old   October 30, 2007, 13:53
Default Re: Two dimensional cubic spline interpolation
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flappingwing2008
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i can't find the code in that web! anybody else can help me?
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Old   November 12, 2007, 10:14
Default Re: Two dimensional cubic spline interpolation
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margarita
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Hi,

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

Margarita.
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Old   November 19, 2007, 05:52
Default Re: Two dimensional cubic spline interpolation
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Gerrit
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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.
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