obspy.io.sac.arrayio.write_sac¶

write_sac(dest, hf, hi, hs, data=None, byteorder=None)[source]¶

Write the header and (optionally) data arrays to a SAC binary file.

Parameters:

dest (str or file) Full path or File-like object to SAC binary file on disk. hf (numpy.ndarray of floats) SAC float header array hi (numpy.ndarray of ints) SAC int header array hs (numpy.ndarray of str) SAC string header array data (numpy.ndarray of float32) SAC data array, optional. If omitted or None, it is assumed that the user intends to overwrite/modify only the header arrays of an existing file. Equivalent to SAC’s “writehdr”. byteorder (str {‘little’, ‘big’}, optional) Desired output byte order. If omitted, arrays are written as they are. If data=None, better make sure the file you’re writing to has the same byte order as headers you’re writing.

Returns:

None

Notes

A user can/should not _create_ a header-only binary file. Use mode ‘wb+’ for data=None (headonly) writing to just write over the header part of an existing binary file with data in it.