Re: [ccp4bb] PHIDM AND FOMDM from DM

2009-02-09 Thread Eleanor Dodson
Xie Jiabao wrote: Dear all, I am using the density modification tool in ccp4 to generate improved phases for/from my model. I find that the electron density map I generate using Fobs, and density modified phases (PHIDM) are not the same as that generated using Fobs, phicalc (original

Re: [ccp4bb] PHIDM AND FOMDM from DM

2009-02-06 Thread Clemens Vonrhein
Dear Xie, you need to use the right columns for calculating maps. From your description it seems you could do the following in FFT: a) map after density modification: F1=Fobs PHI=PHIDM W=FOMDM or (DM should write out these columns as well): F1=FDM PHI=PHIDM See:

[ccp4bb] PHIDM AND FOMDM from DM

2009-02-05 Thread Xie Jiabao
Dear all, I am using the density modification tool in ccp4 to generate improved phases for/from my model. I find that the electron density map I generate using Fobs, and density modified phases (PHIDM) are not the same as that generated using Fobs, phicalc (original calculated phases) and