Hi Pavel, Thanks for getting back to me. I'm running Phenix version 1.9, build 1692. When I run phenix.maps to generate a maps.params file, I don't see electron as an option for scattering_table. I do see the other four options, though. When I run phenix.fmodel as you suggested, but substituting the actual name of the pdb file, I get an error message saying: Sorry: Not a possible choice for scattering_table: electron (command line argument, line 1) Possible choices are: wk1995 it1992 *n_gaussian neutron While it seemed pretty straightforward, is it possible that I haven't installed Phenix properly? Thanks, Omar From: Pavel Afonine [mailto:[email protected]] Sent: Tuesday, February 10, 2015 2:07 PM To: Omar Davulcu; [email protected] Subject: Re: [phenixbb] Calculating map with electron scattering factors Hi Omar, electron scattering table is fully supported. In phenix.maps it is scattering_table = wk1995 it1992 *n_gaussian neutron electron But if you just want to compute a Fourier map from a PDB file then this is more straightforward: phenix.fmodel model.pdb high_res=2.3 scattering_table=electron You need to have a reasonably recent version of Phenix for this. Pavel On 2/10/15 1:57 PM, Omar Davulcu wrote: Hi, everyone. Probably a silly question, but here goes... I'm trying to calculate a simulated map around a set of coordinates using the electron scattering table. Phenix.maps doesn't appear to allow selection of that particular scattering table. I noticed that phenix.refine allows me to select that table and I thought I would set the number of macro cycles to 0 and turn off all the refinement options and produce a map that way. I thought I would generate the structure factors needed as input with phenix.fmodel, but that also doesn't allow selection of the electron scattering table. So, my (naïve) question is: what am I doing wrong? Is there a way I can calculate this map in phenix? Any help would be greatly appreciated. Thanks much! Omar Davulcu _______________________________________________ phenixbb mailing list [email protected]mailto:[email protected] http://phenix-online.org/mailman/listinfo/phenixbb