hb_write — SciPy v1.15.2 Manual (original) (raw)

scipy.io.

scipy.io.hb_write(path_or_open_file, m, hb_info=None)[source]#

Write HB-format file.

Parameters:

path_or_open_filepath-like or file-like

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

msparse array or matrix

the sparse array to write

hb_infoHBInfo

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_array, eye data = csr_array(eye(3)) # create a sparse array hb_write("data.hb", data) # write a hb file print(hb_read("data.hb", spmatrix=False)) # read a hb file <Compressed Sparse Column sparse array of dtype 'float64' with 3 stored elements and shape (3, 3)> Coords Values (0, 0) 1.0 (1, 1) 1.0 (2, 2) 1.0