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[Imgcif-l] proposed change in first line of imgcif files
- To: imgcif-l@iucr.org
- Subject: [Imgcif-l] proposed change in first line of imgcif files
- From: "Herbert J. Bernstein" <yaya@bernstein-plus-sons.com>
- Date: Tue, 26 Aug 2008 20:35:54 -0400 (EDT)
There was an informal meeting to discuss imgCIF at the IUCr Congress in Osaka on 26 August 2008. Details of the discussion will follow in future nessages. This message will summarize a proposal for a change in the first line of all CBF/imgCIF files that are not fully populated with all the imgCIF tags needed for processing by mosflm and adxv. 1. What problem is being solve?. As the use of imgCIF has increased, two very distinct sets of files have appeared: the "miniCBFs" used for the Pilatus 6m detector and more fully populated imgCIF files, such as the ones produced for ADSC detectors. While the information necessary for processing can be discovered from context in handling a miniCBF, it may be necessary to read fairly far into the file to discover that the file is indeed a miniCBF, complicating the design of reading software. 2. The proposed solution. Currently CBF files begin with a magic number comment line 1 2 3 4 5 12345678901234567890123456789012345678901234567890 ###CBF: VERSION n.m We propose to extend the magic number comment line with two optional fields to read 1 2 3 4 5 12345678901234567890123456789012345678901234567890 ###CBF: VERSION n.m style style_version where "style" is a unique CBF style identifier left justified as a single word in columns 25-34 and "style_version" is a left justified integer in columns 35-44. Each style will be registered in a central repository along with information on the tags that will be carried forthat stye and a template of the tags that would be needed to fully populate the file. More details will follow on this list and on the CBFlib wiki after the Osaka meeting is over. ===================================================== 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 ===================================================== _______________________________________________ imgcif-l mailing list imgcif-l@iucr.org http://scripts.iucr.org/mailman/listinfo/imgcif-l
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