You can calculate the Patterson maps with ccp4 FFT program (specify keyword PATTERSON) and as you say you don't need phases or model.
Then use Uppsala MAPMAN to calculate the correlation coefficient between two such maps.
eab
On 06/15/2016 10:28 AM, Rangana Sanjeewa wrote:
> Dear All,
>
> I would like to calculate the degree to which any given two Patterson functions are correlated to each other. Patterson functions are calculated from data only. Does anyone know any tool to do this? It is my understanding that Molecular Replacement programs do this, but they compare calculated vs. model provided.
>
> Thanks for your suggestions.
>
> Best,
> Rangana
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