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Re: [ddlm-group] Relationship asmong CIF2, STAR,CIF1 and Python. . . .. .

I welcome such analysis, which I believe is likely to lead to no more
than a list of useful editorial changes to DDLm related to small
changes in syntax since the DDLm draft document was produced.

It is not trivial to produce a CIF2 version that is fundamentally
unfriendly to DDLm and dREL, given that DDLm and dREL operate at a
semantic level and we are producing a syntax document.  Only if our
CIF2 syntax were to produce a different infoset (abstract
datastructure) could some of the concepts in DDLm and dREL become
poorly specified.

On Sat, Jan 15, 2011 at 11:02 AM, Bollinger, John C
<John.Bollinger@stjude.org> wrote:
> On Friday, January 14, 2011 2:30 PM, Herbert J. Bernstein wrote:
>
>>   I would suggest recalling that this CIF2 exercise began with
>>tryin to define a DDLm/dREL-friendly version of CIF.  To the best
>>of my knowledge, the current DDLm spec is at what is published
>>on the IUCr web site under http://www.iucr.org/resources/cif/ddl/ddlm
>>with draft documents from August 2008.  I propose that we all
>>take the time to review those documents and make a conscious
>>effort to decide if we wish to make use of them as a
>>base for CIF2 or not.  They contain many points relevant
>>to the current discussion.
>
> This is an eminently reasonable suggestion, and I have endeavored to take it.  I find I need more time to formulate the results of my analysis, but they do not lead me to the same conclusion that Herbert has reached, that we should start over from scratch.  However, we can, perhaps, consider each of the changes in our current draft, as Herbert prodded us to do, and evaluate them against this group's mandate and objectives.  We might now draw different conclusions about some of them.
>
> I decline to work on this over the weekend, and Monday is a U.S. holiday, so it will be at least Tuesday before a I respond more fully.
>
>
> Regards,
>
> John
> --
> John C. Bollinger, Ph.D.
> Department of Structural Biology
> St. Jude Children's Research Hospital
>
>
>
>
> Email Disclaimer:  www.stjude.org/emaildisclaimer
>
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