[ccp4bb] PHIDM AND FOMDM from DM

[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 FOMDM (new improved figure of 
merit post dm). Can someone please explain to me why this is so?

Thanks in advance,
Xie