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Finding nemo.dic
- To: comcifs@iucr.org
- Subject: Finding nemo.dic
- From: Brian McMahon <bm@iucr.org>
- Date: Wed, 6 Jul 2011 14:50:44 +0100
- Cc: mh@iucr.org
Dear Colleagues I try to manage the "official" CIF dictionaries in an orderly way, in part through maintenance of the CIF dictionary register ftp://ftp.iucr.org/pub/cifdics/cifdic.register This file (in CIF format, naturally) lists the file names, versions and URLs for COMCIFS-approved dictionaries, for DDL dictionaries and for some "local" dictionaries used by the IUCr journals office. By now, we are seeing a reasonably large number of reserved prefixes for individual developers (or software applications) - see http://www.iucr.org/resources/cif/spec/ancillary/reserved-prefixes . Increasingly, in the editorial office, we are having correspondence with such developers, and we would like to encourage them to make available compilations of local data names in CIF dictionary format, in order to reduce the number of warnings emitted by CIF editors such as publcif and encifer, and - in principle - to allow normal dictionary-based validation of such items. To encourage them further, I would be willing to provide an area on the IUCr ftp server where we could archive such dictionaries, and make them known through the cifdic.register file. Details of how this would work in practice are elaborated below. I'd be interested in your thoughts on this. If you are in favour, I could advertise the availability of such a service through the cif-developers list. Best wishes Brian ------------------------------------------------------------------------------ Below is an extract from the suggested extension to the register. "Nemo", of course, is an entirely hypothetical example. data_validation_dictionaries loop_ _cifdic_dictionary.name _cifdic_dictionary.version _cifdic_dictionary.DDL_compliance _cifdic_dictionary.reserved_prefix _cifdic_dictionary.date _cifdic_dictionary.URL _cifdic_dictionary.description ############################################################################## # COMCIFS approved dictionaries # ############################################################################## cif_core.dic . 1.4.1 . . ftp://ftp.iucr.org/pub/cifdics/cif_core.dic 'Core CIF Dictionary' cif_core.dic 1.0 . . 1991-09-20 ftp://ftp.iucr.org/pub/cifdics/cifdic.C91 'Original Core CIF Dictionary' . . . . . . . # additional "official" CIF dictionaries ############################################################################## # Private dictionaries (re)distributed by the IUCr # ############################################################################## cif_iucr.dic . 1.4.1 . . ftp://ftp.iucr.org/pub/cifdics/cif_iucr.dic 'Private data items used by the IUCr in journal publishing' cif_iucr.dic 1.1.1 1.4.1 . 2011-07-04 ftp://ftp.iucr.org/pub/cifdics/cif_iucr_1.1.1.dic 'Private data items used by the IUCr in journal publishing' . . . . . . . # the above section already exisit for local IUCr dictionaries ############################################################################## # Private dictionaries maintained by third parties but with archival copies # # available through the IUCr # ############################################################################## cif_nemo.dic . 1.4.1 . . http://www.nemo.com/cif/dictionary/cif_nemo.dic 'Items used by the NEMO software package' cif_nemo.dic 1.0 1.4.1 . 2010-12-25 ftp://ftp.iucr.org/pub/cifdics/extras/cif_nemo.1.0.dic 'Items used by the NEMO software package' My comments on this proposal: (1) Such external dictionaries would be stored in a specific area of the IUCr FTP/web site; we would try to ensure that access to this area involved sight of a disclaimer that the contents were the responsibility of the individual developers and did not represent any IUCr endorsement of crystallographic practices that they reflected. (2) Files accepted for archiving in this area would be subject to the normal dictionary sanity checks that I apply to the existing dictionaries; and they should contain data names that properly implement a registered reserved prefix. (3) In general, the register should also point to a dictionary without version number available from the web or ftp site of the third party. This should be a URL that represents the most current version of the dictionary. In this way, developers can update their local files at any time without depending on deposition at the IUCr and associated updating of the register. However, specific versions will be advertised as being available from the IUCr, thus providing a long-term archiving facility which might be useful to such third parties. (4) Participation remains completely voluntary. This scheme is intended to be compatible with the suggested use of the AUDIT_CONFORM category in the core CIF dictionary, and to remain in the spirit of Chapter 3.1.8 of International Tables G on "Management of multiple dictionaries" (http://it.iucr.org/Ga/ch3o1v0001/sec3o1o8/). ------------------------------------------------------------------------------
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