\(\renewcommand\AA{\text{Å}}\)

GSAS-II Developer’s Documentation

The documentation here is intended for those wishing to extend the capabilities within the GSAS-II framework, for scientists/students working to understand how GSAS-II works, or for people wishing to develop scripting applications using the GSAS-II Python API (module GSASIIscriptable). Note that most data structures used in GSAS-II are defined in module GSASIIobj.

For information on downloading/installing GSAS-II, please see the GSAS-II home page: https://advancedphotonsource.github.io/GSAS-II-tutorials. To learn how to use GSAS-II, please see the tutorials, which can be accessed from the GSAS-II Help menu or from this web page: https://advancedphotonsource.github.io/GSAS-II-tutorials/tutorials.html.

For scripting use of GSAS-II, see GSASIIscriptable: Scripting Interface.

Invention Information: Argonne has assigned Software Invention #SF-22-147 to GSAS-II.

Documentation Version:

This documentation was prepared from GSAS-II version 055adb dated 03-Jun-2026 14:05 with the most recent tag as version #5834

Contents: