cctbx.examples.lebedev_2005_perturbation module

Andrey A. Lebedev, Alexei A. Vagin & Garib N. Murshudov Acta Cryst. (2006). D62, 83-95. http://journals.iucr.org/d/issues/2006/01/00/ba5089/index.html Appendix A1. Algorithms used in the determination of twinning operators and their type of merohedry

The formula for the perturbation mentioned in the appendix and the matrices_from_email below kindly provided by Andrey.

This script reproduces the perturbations (“scores”) given by Andrey. It also shows the Le Page (1982, J. Appl. Cryst. 15, 255-259) deltas in radians for comparison.

cctbx.examples.lebedev_2005_perturbation.run()