mminfo

  function  [rows, cols, entries, rep, field, symmetry] = mminfo(filename)

      Reads the contents of the Matrix Market file 'filename'
      and extracts size and storage information.

      In the case of coordinate matrices, entries refers to the
      number of coordinate entries stored in the file.  The number
      of non-zero entries in the final matrix cannot be determined
      until the data is read (and symmetrized, if necessary).

      In the case of array matrices, entries is the product
      rows*cols, regardless of whether symmetry was used to
      store the matrix efficiently.