Re: [phenixbb] A couple of questions regarding twinning

Hi Owen,

On a related note, how is the R factor calculated with twinned structures (i.e., how is Fcalc determined for the purposes of R factor calculation)?

here are the formulas that are used in phenix.refine, phenix.model_vs_data and other related tools for the R-factor and total model structure factor Fmodel: http://cci.lbl.gov/~afonine/FandR/Fmodel_and_Rfactor.pdf Pavel.