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Note that the XDS coordinates are affected by the DIRECTION_OF_DETECTOR_[XY]-AXIS keywords. You should check with the beamline where you collected your data for the right combination of XDS parameters. I believe Cassiopeia have this information here: http://cassiopeia.maxlab.lu.se/index/siteglossary-display-action?_key=Be am%20centre A quick way to check the conversions is to load an image with a prominent off-centred feature in your programs of interest and directly read off the coordinates at the feature. Be careful with points too close to the centre since you can easily miss flipped axes. For example, I got the following for one case: X Y MARCCD 1434 1509 XDS (VIEW) 1434 1509 MOSFLM 1509 1434 Regards, Michel. ________________________________ From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Kadhirvel Saraboji Sent: November 2, 2006 8:59 AM To: [email protected] Cc: [EMAIL PROTECTED] Subject: [ccp4bb]: direct beam position Dear all, What is relationship between the coordinates of the centre of the diffraction pattern (the direct beam position) adopted by differnt programs (DENZO, XDS, MOSFLM)?? It will be helpful if anybody could suggest the conversion of the detector origin from Denzo to XDS / MOSFLM coordinates. Many thanks in advance Regards Saraboji ________________________________ Everyone is raving about the all-new Yahoo! Mail. <http://us.rd.yahoo.com/evt=42297/*http://advision.webevents.yahoo.com/m ailbeta>
