RE: [ccp4bb]: ccp4bb - map calculation

["Bernhard Rupp" <br@llnl.gov>]

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CNS uses a notation in its web form similar to F*FOM exp(phic) -
thats where that 'e' comes out of context copied from.
He only wants a Fo*FOM map with PHWT (yes FFT) and then average it
We'll try maprot as we know the ncs matrix.

-----------------------------------------------------------------
Bernhard Rupp
TAMU
 

> -----Original Message-----
> From: owner-ccp4bb@dl.ac.uk [mailto:owner-ccp4bb@dl.ac.uk]On Behalf Of
> Bart Hazes
> Sent: Thursday, February 28, 2002 7:42 AM
> To: E.Dodson@ysbl.york.ac.uk
> Cc: kuppan gokulan; ccp4bb@dl.ac.uk
> Subject: Re: [ccp4bb]: ccp4bb - map calculation
> 
> 
> ***  For details on how to be removed from this list visit the  ***
> ***          CCP4 home page http://www.ccp4.ac.uk         ***
> 
> 
> kuppan gokulan wrote:
> >
> > ***  For details on how to be removed from this list visit the  ***
> > ***          CCP4 home page http://www.ccp4.ac.uk         ***
> >
> > Hi
> >
> > I want to calculate Fobs * FOM / e PHIC : map from my x-ray diffraction
> > data. Also I want to average this using known NCS matrix. Can any one
> > suggest any programs which do this? Please suggest me in this regard.
> 
> Like Eleanor I don't quite understand what kind of map you are trying to
> calculate. Fobs*Fom/E sounds strange, what would its physical meaning be?
> For averaging, you basically want to start with your best map 
> coefficients. If
> you do need to do some math to get the proper amplitudes then 
> SFTOOLS allows
> you to do that as Eleanor indicated. You can use the CCP4 FFT program to
> calculate the map but, while you're at it, you can also use the 
> FFT command
> within SFTOOLS to do the same and save the map in CCP4 format.
> 
> Bart
> 
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