Hi Tim, You could create a freerflag column of the right length outside CCP4 and then just import it into CCP4. That would save you a lot of scripting inside CCP4 context.
Cheers, Robbie -----Original Message----- From: Tim Gruene [mailto:tim.gru...@psi.ch] Sent: Tuesday, January 31, 2017 03:29 To: Robbie Joosten Cc: CCP4BB@jiscmail.ac.uk Subject: Re: [ccp4bb] variation in freerflag Hi Robbie, I had long wondered how to flag the fields in game minesweeper with a deterministic algorithm. When I read about 'random sort and bin' I though this was quite a beautiful way. I wonder if there is any reason behind not doing it this way in freerflag. Assigning the flags randomly this way in a manual manner (CAD?) probably requires some tedious scripting, doesn't it? Best, Tim On Monday, January 30, 2017 9:45:40 PM CET Robbie Joosten wrote: > Hi Tim, > > > > I was discussing that with a student today, because we observe the > same thing when we make test sets for k-fold cross validation. It is > an implementation choice. You can random sort and then bin, or you can > assign a random number to each reflection and translate that to a bin. > The latter is fine for large bins, but not for small ones like the > ones you are making. > > > > Cheers, > > Robbie > > > > > > > > Sent from my Windows 10 phone > > > > Van: Tim Gruene<mailto:tim.gru...@psi.ch> > Verzonden: maandag 30 januari 2017 21:03 > Aan: CCP4BB@JISCMAIL.AC.UK<mailto:CCP4BB@JISCMAIL.AC.UK> > Onderwerp: [ccp4bb] variation in freerflag > > > > Dear all, > > when I ran freerflag with the keyword FREERFRAC 0.002, the number of > reflection per flag (between 0 and 500) is very high, it varies > between 17 and 1. > > Why is there such a high variation, instead of flagging always the > same number of reflections per flag (6-7 in my case)? Can the > distribution be made evenly? > > Best regards, > Tim > -- > -- > Paul Scherrer Institut > Tim Gruene > - persoenlich - > OFLC/102 > CH-5232 Villigen PSI > phone: +41 (0)56 310 5297 > > GPG Key ID = A46BEE1A -- -- Paul Scherrer Institut Tim Gruene - persoenlich - OFLC/102 CH-5232 Villigen PSI phone: +41 (0)56 310 5297 GPG Key ID = A46BEE1A
