[Haskell-cafe] HMatrix Vector/Matrix interpolation ala Matlab interp/interp2 ??

[Henning Thielemann]

On Sat, 22 Jan 2011, gutti wrote:

> I'm looking for Vector and especially Matric interpolation ala:
>
>    z = interp2 (xMatrix, yMatrix, zMatrix, x, y)
>
>   - x and y can be single values or also vectors or matrices
>   - indeally with the options nearest, linear, quadratic, qubic..
>
> Any hope that there is something similar especially using the HMatrix
> matrices (Matrix Double). - If I have to code it any suggestions ?

Here is the power of Haskell - I have implemented some interpolations in 
terms of Vector spaces, that is you can interpolate Vectors, Matrices, 
Functions, or whatever you like:
    http://code.haskell.org/synthesizer/core/src/Synthesizer/Interpolation/Module.hs

However this code is specialised to interpolate between adjacent objects 
in a stream, and needs numeric-prelude, and you have to declare an 
instance for
   Algebra.Module.C Double (HMatrix Double)
  and this would be an orphan instance that should better go to an 
official separate package ...