pgm is a pure Haskell library to read and write PGM images. Points of note: * Seamlessly handles the divide between 1 and 2 byte per pixel images (this is vital for folks doing microscopy, since otherwise we're stuck in tiff hell). * Returns the images as UArrays; writes from UArrays. * Handles multiple PGMs concatenated one after another in a file, provided they are separated only by (optional) whitespace. * Encodes and decodes all comments in the PGM header, which can be used to drop arbitrary metadata into files in a human readable manner. -- Frederick Ross Doctorant, SV/GHI/UPKIN, EPFL Graduate Fellow, The Rockefeller University