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Re: [ccp4bb]: From FOM and PHI to HLC

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Dear Nagem

PHI and FOM describe, by definition, a unimodal distribution;  they simply
do not contain the information of the full bimodal distribution.  It is
therefore not possible simply to conjure one up (unless you want to cook
your data, as in first year Chemistry...)  To get bimodal distributions,
you'll have to go back to your experimental MIR/MAD data and have the
phasing program (Sharp, mlphare, whatever) write out HLC.  

Good luck

On Mon, 16 Apr 2001, Ronaldo Alves Pinto Nagem wrote:

> Date: Mon, 16 Apr 2001 11:38:32 -0300
> From: Ronaldo Alves Pinto Nagem <nagem@lnls.br>
> To: ccp4 <ccp4bb@dl.ac.uk>
> Subject: [ccp4bb]: From FOM and PHI to HLC
> Dear CCP4 users;
> I have a simple question.
> If I have one mtz file with FOM and PHI and I want HLA, HLB , HLC and HLD (HL coeficients)
> which program do I have to use? How....? SFTOOLS is good just for an unimodal distribution but
> I need a bimodal distribution representation....
> Thanks in advance.
> Nagem.
> --
>  ______________________________________________________________________
>  Ronaldo A. P. Nagem                         |
>  Protein Crystallography Group               | E-mail:  nagem@lnls.br
>  LNLS Laboratorio Nacional de Luz Sincrotron | Phone:   55-19-32874520
>  Rua Giuseppe Maximo Scolfaro, 10.000 Guara  | Fax:     55-19-32877110
>  CEP 13084-971 Campinas SP Brasil            | Website: www.lnls.br