PySegd

Read/write SEG-D files in Python.

This project is rewritten and expanded after the version from read_segd,
licensed under the GNU Lesser General Public License v3 (LGPL v3), as a starting point.

Main Changes (2022, M.L.)

• Dropped support for Python 2.
• Removed dependency on ObsPy, making the library standalone.
  Traces can still be converted to ObsPy objects easily.
• Completely rewrote the program using object-oriented syntax.
  Header fields and data arrays are decoded only on request, while remaining transparent for the user.

August 2022, M.L.

• Implemented the writing of SEG-D files.

How It Works

• The file is read using a SegdFile object organized as follows:
  • SegDFile
    • BlockDecoders
      • TypeDecoders
• The BlockDecoders are subclasses of the BlockDecoder class, which contains the structure for a given block of the file.
• The TypeDecoders are attributes that handle a specific variable. They internally manage fields of the file header or data in binary or unpacked format.
• When the user accesses a specific field, the decoder decodes the bytes on demand and returns the unpacked version, making the process transparent to the user.

License

This project is licensed under the GNU Lesser General Public License v3.0.
It is derived from the project read_segd, originally licensed under the GNU Lesser General Public License v3 (LGPL v3).
The original copyright is held by Claudio Satriano.

For more details, see the LICENSE file included in this repository.