-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Comments on the comments ;-):
On 01/18/2012 05:54 PM, James Holton wrote: > [...] > An important thing that is not done automatically, however, is to check > if your space group has more than one indexing solution. Basically, if > merohedral twinning is possible, then it is also possible that your two > datasets were indexed differently. If so, they will not merge well! > Until you re-index one of them. A nice table to use is here: > http://www.ccp4.ac.uk/html/reindexing.html both pointless (as you point out) and XDS do this automatically (whether or not they do it correctly is a different matter). > [...] > > By the way, I wouldn't use "MAD" to describe the mergeing of > non-isomorphous datasets. I agree, neither would I. Just to be on the save side and avoid confusion by less experienced readers of the list: I used the term MAD because there are two data sets collected at two different wavelenghts, both of which should give rise to a measurable anomalous signal from the Co in the sample. Cheers, Tim > -James Holton > MAD Scientist > > On 1/18/2012 3:08 AM, Tim Gruene wrote: > Dear Arko, > > could you not try MAD with the two different data sets? > Otherwise you can check the strength of the anomalous signal for both > sets separately (I am sure pointless prints the anomalous CC over > resolution shell) and after merging them. > If the signal increases, use the merged data set for SAD, it it does > not, use them separately (but then you call it MAD...). > > Tim > > On 01/18/2012 12:03 PM, arka chakraborty wrote: >>>> Hi all, >>>> >>>> I have two datasets, both CO SAD data, one collected at CO anomalous >>>> wavelength at synchroton and the other at home source. I wish to combine >>>> these two data-sets and use for SAD phasing. Can anyone suggest how this >>>> can be done? >>>> >>>> Regards, >>>> >>>> ARKO >>>> > -- - -- > Dr Tim Gruene > Institut fuer anorganische Chemie > Tammannstr. 4 > D-37077 Goettingen > > GPG Key ID = A46BEE1A > - -- - -- Dr Tim Gruene Institut fuer anorganische Chemie Tammannstr. 4 D-37077 Goettingen GPG Key ID = A46BEE1A -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.10 (GNU/Linux) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/ iD8DBQFPFv9tUxlJ7aRr7hoRAqC/AJ48y5F8PP10HYVbUznPKcXKXG++zQCg70Ok xOQB6YcE1/6eP1he0wXfxyQ= =xY+/ -----END PGP SIGNATURE-----
