Re: [ccp4bb]: CCP4bb- Patterson map

["Eleanor J. Dodson" <ccp4@ysbl.york.ac.uk>]

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syed ibrahim wrote:
> Dear All,
> 
> I am asking about to calculate Patterson map (not any difference 
> patterson). I have data of native data set only (not having derivative 
> data set). For this how much I can give for the grid spacing? should I 
> give B-factor scaling? How can I use the resulting map from this 
> programe. Is this map mention electron density map or patterson map?
> 
> Thanks in advance
> 
> syed
> 
> 


  Do not set anything - the defaults will be generatedfrom your 
resolution limit.
You need to say


fft hklin ... mapout ...
TITLE - native patterson
LABI F1=? SIG1=?
PATT
END


  you can then view sections of the map with mapslicer, or search for 
peaks with peakmax


  But why are you doing this?

Native Pattersons can indicate you have a pseudo translation, otherwise 
they are not terribly useful.
Eleanor



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