SpinW (spin-double-u) is a Matlab library that can optimize magnetic structures using mean field theory and calculate spin wave dispersion and spin-spin correlation function for complex crystal and magnetic structures. For details check http://www.spinw.org

We are currently in a period of change. SpinW will be moving to python/C (with a Matlab interface). I'm sure you can appreciate that this will be a lot of work as all of the code will be completely re-written and updated. In this period the Matlab version will be stabilized at v3.1.1 with bug fixes and reviewed external pull requests. More details of the new version will follow. For Q&A we are testing GitHub Discussions.

• experimental and under construction, the address can change in the future
• documentation of the master branch
• use swdoc/swhelp instead of the Matlab built-in doc/help functions to get help on SpinW
• can be also accessed from the browser: https://spinw.github.io/spinwdoc/

Currently automated testing is on the ubuntu-latest, windows-latest and macos-latest Github actions runners (Ubuntu 20.04, Windows Server 2022, macOS-11 as of 16/11/22) and the latest Matlab version available from the setup-matlab action (R2022b as of 16/11/22). We also test on Ubuntu 20.04 and MATLAB2020a. It should be noted that MATLAB symbolic calculation changed post R2018a and as such symbolic results may be differ with a relative tolerance of < 0.03%.

Testing can be pulled from the testing repository and run with the runspinwFunctionalityTests command from the Testing directory.