I have used phenix.xtriage. It finds three twin laws with alpha ~0.48 for all of them and the results of the perfect twin test are well over 2.
Ben On 9/22/09 1:50 PM, Tanner, John J. wrote: > I suggest you analyze your data with phenix.xtriage. It does several tests > and gives descriptive output. > > > ________________________________ > From: Ben Flath <bef...@mail.usask.ca> > Reply-To: Ben Flath <bef...@mail.usask.ca> > Date: Tue, 22 Sep 2009 14:31:26 -0500 > To: <CCP4BB@JISCMAIL.AC.UK> > Conversation: [ccp4bb] perfect twin test > Subject: [ccp4bb] perfect twin test > > Hi all > > when subjecting my data to the perfect twin test <I*2>/<I>*2 I get values > very close to 3 which is far off the theoretical values of 1.5 and 2 for > twinned and untwinned data. > > can anyone shed some light on what might be going on with my data. Could > tetartohedral twinning have anything to do with it? > > Thanks > > > --------------------------------- > > Benjamin Flath > College of Pharmacy and Nutrition > University of Saskatchewan > 320 Thorvaldson Building > 110 Science Place > Saskatoon, SK > S7N 5C9
