Can you send your command file ? And how are you displaying the Patterson map ? >From CCP4I you can request a peak search of the map - check if the peaks correspond to ones you would expect from your coordinates
Maybe read the map and vector positions into COOT to see? Eleanor On Tue, 21 Jun 2022 at 19:19, Jon Cooper < 0000488a26d62010-dmarc-requ...@jiscmail.ac.uk> wrote: > Hello, in P21, FFT swaps the axes around so Y will be the slowest changing > axis i.e. along W in the Patterson, I think. > > How many atoms are in your model? Very hard to be sure it's not working as > the Patterson is so very convoluted with a large model. > > Cheers, Jon.C. > > > Sent from ProtonMail mobile > > > > -------- Original Message -------- > On 21 Jun 2022, 14:11, fuxingke < fuxingke0...@163.com> wrote: > > > In ccp4, I can use "Generate Patterson Map" to generate Patterson map > in "Map & Mask Utilities". But, I found a serious problem. When I use a set > of data with spacegroup P21 and the position of atom is kown, the length > of w-axis in the Patterson map is not equal to cell parameters c. What's > more, the position of Patterson peaks are also different from the > interatomic vectors. The parameter is as below. > Why the Patterson map is different? How can I avoid this problem？Is > there any other better method to calculate the Patterson map? > [image: 0] > > I'm looking forward to your reply. > > Regards > > > > Best wishes, > > Fu Xingke > Institute of Physics CAS > > > ------------------------------ > > To unsubscribe from the CCP4BB list, click the following link: > https://www.jiscmail.ac.uk/cgi-bin/WA-JISC.exe?SUBED1=CCP4BB&A=1 > > ------------------------------ > > To unsubscribe from the CCP4BB list, click the following link: > https://www.jiscmail.ac.uk/cgi-bin/WA-JISC.exe?SUBED1=CCP4BB&A=1 > > ######################################################################## To unsubscribe from the CCP4BB list, click the following link: https://www.jiscmail.ac.uk/cgi-bin/WA-JISC.exe?SUBED1=CCP4BB&A=1 This message was issued to members of www.jiscmail.ac.uk/CCP4BB, a mailing list hosted by www.jiscmail.ac.uk, terms & conditions are available at https://www.jiscmail.ac.uk/policyandsecurity/
