# scipy.io.hb_write

scipy.io.hb_write(path_or_open_file, m, hb_info=None)

  Write HB-format file.

  Parameters:
    path_or_open_file path-like or file-like

      If a file-like object, it is used as-is. Otherwise, it is opened before writing.

    m sparse-matrix

      the sparse matrix to write

    hb_info HBInfo

      contains the meta-data for write

  Returns:
    None

  Notes

  At the moment not the full Harwell-Boeing format is supported. Supported features are:

  > - assembled, non-symmetric, real matrices

  > - integer for pointer/indices

  > - exponential format for float values, and int format

  Examples

  We can read and write a harwell-boeing format file:

      >>> from scipy.io import hb_read, hb_write
      >>> from scipy.sparse import csr_matrix, eye
      >>> data = csr_matrix(eye(3))  # create a sparse matrix
      >>> hb_write("data.hb", data)  # write a hb file
      >>> print(hb_read("data.hb"))  # read a hb file
        (0, 0)    1.0
        (1, 1)    1.0
        (2, 2)    1.0