On 9/9/11 1:44 PM, Aleksey Khudyakov wrote: > If you install hmatrix with -fVector key it will use storable vectors > from vector package. that flag defaults to True, so the representations are actually the same by default: http://hackage.haskell.org/packages/archive/hmatrix/0.12.0.0/hmatrix.cabal <sk>