Re: OMIT-map

2024-08-19 Thread Marcin Wojdyr
The OMIT map is calculated like a normal map, but with a certain region of the structure being omitted when calculating Fcalc. A usual electron density map in macromolecular crystallography is calculated from both experimental (Fobs) and calculated (Fcalc) structure factors. Fcalc (structure

Re: OMIT-map

2024-08-19 Thread Jonathan Wright
/0b735da79488087ee5bc7b3159c82f90a5697dc2/GSASII/GSASIImath.py#L3720 Best, Jon On 2024-08-19 09:16, Többens wrote: This seems to be another name for a difference Fourier map, calculated from F_obs - F_calc; the term omit map being used in the macromolecular community. It shows scattering density missing in the

RE: OMIT-map

2024-08-19 Thread Többens , Daniel
This seems to be another name for a difference Fourier map, calculated from F_obs - F_calc; the term omit map being used in the macromolecular community. It shows scattering density missing in the model, i.e. from omitted atoms. *Von:* davide.lev...@gmail.com *Gesendet:* Sonntag, 18

OMIT-map

2024-08-17 Thread davide.levy69
Dear All, I received the answer from a referee for an article about an organic structure I determined. The referee asks for An omit map (including contour level) for all ligand-bound crystal structures. I searched about omit-map, but I did not find a clear how to calculate this map. Can