2012 Data Discussion

• The following is the agenda of work posted under business for canSAS-2012. Please add comments here:
  • 1D Format
  • agree a proposed foreign namespace extension of the current 1D standard (required to enable, for example, t-o-f instruments to store auxillary wavelength-dependent non-I(Q) data in the same output files)
    • see Section 1.6.5 in here
    • and look at this example
    • or this one
  • agree resultant changes to the schema/stylesheet

   ARJN - I would recommend that during this meeting that the current format then be 'parked', the new 2D format
          should be flexible enough to handle 1D and 2D data

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• • 2D Format
  • define minimum necessary for reduced data
    • review previous discussions on 2D
    • considerations specific to 2D reduced data
    • consider forward looking issues such as
      • grazing incidence
      • event mode analysis
  • suggest format framework (NeXus extension, canSAS 1D extension, other) with brief discussion of the reason for the choice (including options considered, pros and cons of each, and final weighing)
    • compare with NeXus definitions for:
      • NXsas
      • NXiqproc
  • Guide to how to make implementation easy.
  • Create straw format suitable for test/demonstration use and convert some test data for such a demonstration.
  • Provide a plan for presentation at SAS 2012

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• A proposal for a 2D version of the canSAS 1D data format has been posted for discussion: 2D Data Format Proposal
• NeXus has a definition for multi-dimensional data:
  • http://download.nexusformat.org/doc/html/ClassDefinitions-Application.html#NXsas
  • http://svn.nexusformat.org/definitions/trunk/applications/NXsas.nxdl.xml

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Ron Ghosh has laid out details of a proposal to use HDF5/Nexus : HDF5 Notes Ghosh

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