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Re: [Imgcif-l] CBF file templates

Dear Colleagues,

   Right now the utilities in the library use templates that are intended
to be for just one beamline per template, so they are set up with
tags with zero values for the items that they know will be populated
from the detector and known specific values for the beamline for items
that come from the beamline geometry.  If we are going to have master
templates, there would seem to be more cases:

    1.  Items that will be supplied by every detector.
    2.  Items that will be supplied by some detectors but not
others
    3.   Items that will be supplied by every beamline
    4.   Items that will be supplied by some beamlines but not
others

I would suggest using "?", rather than "0" values for all items that are 
know known for sure in writing the master template. Then in specializing 
for a given beamline (e.g. in setting up the axes), all of the "?" for 3, 
hopefully a lot for 4 could be removed and replaced with known values. 
When the detector data is merged with the beam-line specific tempate, 
hopefully all "?" for 1 and a lot for 2 would be replaced with data from 
the detector.  The "?" that are left would then be clear markers of what 
was supplied neither by the beamline nor by the detector.  I am working on
the code to allow comments to be preserved and copied along with data,
so we could carry remarks such as:

   # This item should be supplied by every beamline
   # This item should be supplied on beamlines ..., ... ...
   # This item should be supplied by every detector
   # This item should be supplied by detectors ..., ... ...

or is people, prefer, we can add CIF tags with the same info

   Regards,
     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 Tue, 29 Sep 2009, Winter, Graeme (DLSLtd,RAL,DIA) wrote:

> Dear CBF'ers,
>
> I'm working on trying to establish a "Diamond standard" template for our
> CBF files across a number of detectors, and I was wondering how this is
> best specified. What would be ideal would be to set up a template which
> contains those things that the beamline "knows" but the detector does
> not, then have the detector software populate the other fields (e.g.
> exposure time, integration time, maximum trusted pixel, oscillation
> start / end) to give a full description.
>
> Now, has anyone done something like this? If so, how do you specify the
> fields which are to be replaced? If not, does anyone have an opinion on
> how this should be done?
>
> Thanks,
>
> Graeme
>
> Graeme Winter
> Software and MX Support Scientist
> Diamond Light Source
>
> +44 1235 778091 (work)
> +44 7786 662784 (work mobile)
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