Francis, I think the only format that detwin will accept is:
-h/2+k/2-l, h/2-k/2-l, -h/2-k/2 i.e. '*'s are definitely not allowed. However the matrix that is generated contains only integer elements, so in fact it won't accept the '/'s either. Is this supposed to be a merohedral (or pseudo-merohedral) twin operator? If not then it won't work. Personally I wouldn't use detwin anyway, I think it's likely to cause more problems than it solves! Cheers -- Ian > -----Original Message----- > From: owner-ccp...@jiscmail.ac.uk > [mailto:owner-ccp...@jiscmail.ac.uk] On Behalf Of Francis E Reyes > Sent: 01 February 2010 23:33 > To: CCP4 bulletin board > Subject: how to supply the following twin operator to detwin? > > Hi All > > I'm having trouble with the following ... > > > title [No title given] > operator -1/2*h+1/2*k-l, 1/2*h-1/2*k-l, -1/2*h-1/2*k > labin I(+)=I_Unspecified(+) SIGI(+)=SIGI_Unspecified(+) > I(-)=I_Unspecified(-) SIGI(-)=SIGI_Unspecified(-) > end > > > I keep getting symmetry operator error. > > Thanks > FR > > --------------------------------------------- > Francis Reyes M.Sc. > 215 UCB > University of Colorado at Boulder > > gpg --keyserver pgp.mit.edu --recv-keys 67BA8D5D > > 8AE2 F2F4 90F7 9640 28BC 686F 78FD 6669 67BA 8D5D > > Disclaimer This communication is confidential and may contain privileged information intended solely for the named addressee(s). It may not be used or disclosed except for the purpose for which it has been sent. If you are not the intended recipient you must not review, use, disclose, copy, distribute or take any action in reliance upon it. If you have received this communication in error, please notify Astex Therapeutics Ltd by emailing i.tic...@astex-therapeutics.com and destroy all copies of the message and any attached documents. Astex Therapeutics Ltd monitors, controls and protects all its messaging traffic in compliance with its corporate email policy. The Company accepts no liability or responsibility for any onward transmission or use of emails and attachments having left the Astex Therapeutics domain. Unless expressly stated, opinions in this message are those of the individual sender and not of Astex Therapeutics Ltd. The recipient should check this email and any attachments for the presence of computer viruses. Astex Therapeutics Ltd accepts no liability for damage caused by any virus transmitted by this email. E-mail is susceptible to data corruption, interception, unauthorized amendment, and tampering, Astex Therapeutics Ltd only send and receive e-mails on the basis that the Company is not liable for any such alteration or any consequences thereof. Astex Therapeutics Ltd., Registered in England at 436 Cambridge Science Park, Cambridge CB4 0QA under number 3751674