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Re: [Imgcif-l] Direct beam vector / direction
- To: The Crystallographic Binary File and its imgCIF application to image data <imgcif-l@iucr.org>
- Subject: Re: [Imgcif-l] Direct beam vector / direction
- From: "Herbert J. Bernstein" <yaya@bernstein-plus-sons.com>
- Date: Thu, 23 Jun 2011 07:08:55 -0400 (EDT)
- In-Reply-To: <13999B6FC038EB44B067771E3CFBD09108B71C@EXCHMBX03.fed.cclrc.ac.uk>
- References: <13999B6FC038EB44B067771E3CFBD09108B71C@EXCHMBX03.fed.cclrc.ac.uk>
Yes -- that all sounds right. -- Herbert ===================================================== Herbert J. Bernstein, Professor of Computer Science Dowling College, Kramer Science Center, KSC 121 Idle Hour Blvd, Oakdale, NY, 11769 +1-631-244-3035 yaya@dowling.edu ===================================================== On Thu, 23 Jun 2011, Graeme.Winter@Diamond.ac.uk wrote: > Hi Folks, > > So, I am looking very closely into the cif side of imgCIF now and have started to wonder about how / where we record the direct beam vector. Specifically: > > - the rotation axis is canonically 1, 0, 0 > - the component of the vector from sample to source PERPENDICULAR to the primary rotation axis is 0, 0, 1 > > In the example CIF headers in the big book (Tables G) there is a > > SOURCE general source . 0 0 1 . . . > > record which I assume would be the place (small values for 0 0 assumed, near unity for 1 when we add in "real" values) however there does not appear to be a mechanism in cbflib to extract this easily, in the same way that there is for the rotation axes and detector orientation. > > Before I start to code up a mechanism to fetch this out I thought I should check my assumptions first! > > Is this right? > > Many thanks in advance, > > Graeme > > Dr. Graeme Winter > Senior Software Scientist > Diamond Light Source > > +44 1235 778091 (work) > +44 7786 662784 (work mobile) > > > > > > -- > > This e-mail and any attachments may contain confidential, copyright and or privileged material, and are for the use of the intended addressee only. If you are not the intended addressee or an authorised recipient of the addressee please notify us of receipt by returning the e-mail and do not use, copy, retain, distribute or disclose the information in or attached to the e-mail. > > Any opinions expressed within this e-mail are those of the individual and not necessarily of Diamond Light Source Ltd. > > Diamond Light Source Ltd. cannot guarantee that this e-mail or any attachments are free from viruses and we cannot accept liability for any damage which you may sustain as a result of software viruses which may be transmitted in or with the message. > > Diamond Light Source Limited (company no. 4375679). Registered in England and Wales with its registered office at Diamond House, Harwell Science and Innovation Campus, Didcot, Oxfordshire, OX11 0DE, United Kingdom > > > > > > > > > > _______________________________________________ > imgcif-l mailing list > imgcif-l@iucr.org > http://scripts.iucr.org/mailman/listinfo/imgcif-l > _______________________________________________ imgcif-l mailing list imgcif-l@iucr.org http://scripts.iucr.org/mailman/listinfo/imgcif-l
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