Phasing diagrams in CCP4 Basic Maths for Protein Crystallographers (source code)

= Phasing diagrams in CCP4 Basic Maths for Protein Crystallographers
{c}

https://www.ccp4.ac.uk/html/pxmaths/bmg9.html

Primary CCP4 documentation, SIR—Single Isomorphous Replacement and MIR—Multiple Isomorphous Replacement. Vector-circle construction gives two possible protein phases from one derivative; a consistently positioned additional derivative can add a resolving constraint. The article supplies its own amplitudes for an illustrative calculation.