Sang Hoon Joo wrote:
trying to get a map from mtz file using fft in ccp4i, it appeared my simple
map does not look like the map I got from coot.
At the same time, while I was trying to build 2Fo-Fc map (assuming simple
map is not 2Fo-Fc), there were several options I could choose from for each
F and PHI, or others, and I was not able to find clear answer from simple
googling.... any idea, or clarification? Thanks,
They should look the same!
The default coot maps use labels FWT and PHWT to get the 2mFo-DFc map
DELFWT and PHDELWT for the difference map.
Using the fft task allows you to do more complicated maps.
eg FHP -FP with the phase PHIC/FOM should show you any heavy atom peaks,
DANO / PHIC/FOm will give an anomalous difference fourier etc
But if you just do an fft using FWT and PHWT that should look exactly
like the coot map..
Eleanor
