-- Hoogle documentation, generated by Haddock
-- See Hoogle, http://www.haskell.org/hoogle/


-- | Haar wavelet transforms
--   
--   A Haar wavelet transform represents a sequence using square waves as
--   basis vectors.
@package haar
@version 0.1


-- | Haar Wavelet transforms.
module Codec.Haar

-- | Perform a Haar wavelet transform on a one-dimensional array. The
--   length of the array must be a power of 2, otherwise an error will
--   occur.
haar1D :: (Num a, Fractional a) => [a] -> [a]

-- | Undo a Haar wavelet transform, recovering the original one-dimensional
--   array.
unHaar1D :: (Num a, Fractional a) => [a] -> [a]

-- | Perform a Haar wavelet transform on a two-dimensional array. The
--   number of rows and columns must both be powers of 2, otherwise an
--   error will occur.
haar2D :: (Num a, Fractional a) => [[a]] -> [[a]]

-- | Undo a Haar wavelet transform, recovering the original two-dimensional
--   array.
unHaar2D :: (Num a, Fractional a) => [[a]] -> [[a]]