On Friday 14 April 2006 17:02, Frederik Eaton wrote: > An index-aware linear algebra library in Haskell
Excellent work! Is it possible to create a vector or matrix whose size is not known at compile time? > - Due to the need to specify index types at some point, input of > vectors is difficult. I have provided two functions in Fu.Vector.Base > which should cover most of the cases: > > listVec :: Vector v e => [e] -> (forall n . (ReflectNum n) => v (L n) -> w) > -> w > listMat :: Vector v e => [[e]] -> > (forall n m . (ReflectNum n, ReflectNum m) => v (L m, L n) -> w) -> w > > However, these aren't useful in interactive situations. So I have also > provided some template-haskell routines > > http://ofb.net/~frederik/futility/src/Vector/Template.hs > > which can be used to instantiate vectors directly. For example: (In examples.hs): >-- matrix with elements of type Double >v6 = trans $(dAM [[1,2,3,4]]) > >v7 = $(dAM [[1,0,0],[0,1,0],[0,0,1],[1,1,1]]) -- Alberto _______________________________________________ Haskell-Cafe mailing list [email protected] http://www.haskell.org/mailman/listinfo/haskell-cafe
