obspy.io.segy.segy._read_segy

_read_segy(file, endian=None, textual_header_encoding=None, unpack_headers=False, headonly=False)[source]

Reads a SEG Y file and returns a SEGYFile object.

Parameters:

  • file – Open file like object or a string which will be assumed to be a filename.

  • endian (str) – String that determines the endianness of the file. Either ‘>’ for big endian or ‘<’ for little endian. If it is None, obspy.io.segy will try to autodetect the endianness. The endianness is always valid for the whole file.

  • textual_header_encoding – The encoding of the textual header. Either ‘EBCDIC’, ‘ASCII’ or None. If it is None, autodetection will be attempted.

  • unpack_headers (bool) – Determines whether or not all headers will be unpacked during reading the file. Has a huge impact on the memory usage and the performance. They can be unpacked on-the-fly after being read. Defaults to False.

  • headonly (bool) – Determines whether or not the actual data records will be read and unpacked. Has a huge impact on memory usage. Data will not be unpackable on-the-fly after reading the file. Defaults to False.