[phenixbb] FOM in table 1

Johan Hattne jhattne at lbl.gov
Mon Apr 30 10:17:02 PDT 2012

On 29 Apr 2012, at 23:55, Dialing Pretty wrote:

> In some table 1 of the crystallography paper, there is an item called "FOM". Will you please explain the meaning of it? Do we have a server to get it or some other route to get this value?

I'm guessing this is the "figure of merit", defined as the cosine of the phase error.  Since the correct phase is generally unknown it's an estimate, which may be calculated during density modification (phase improvement).

// Best wishes; Johan

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