[Nexus] Split datasets?

[Herbert J. Bernstein]

Dear Colleagues,
  If you follow the NXmx structure in writing a master file with metadata
and data files with some reasonable
number of images in each data file, the reorganization of the master file
into multiple master files should be
fairly easy.  I would suggest we form a small group of whoever is
interested to work with your beamline,
design the fix and add the necessary additions to NXmx.  I am interested.
  __ Herbert

On Mon, Apr 8, 2019 at 1:43 PM Benjamin Watts <benjamin.watts at psi.ch> wrote:

> Hi Everyone,
>     One of our beamlines wants to write write data into a
> Nexus-compatible file. The problem is that the hardware/software
> combination is a bit strange and wants to write the data in pieces. This
> is an XRF detector used in a scanning experiment such that a spectrum is
> recorded for each step along the scan. The detector wants to fill up its
> buffer with scans and then dump them into an HDF5 dataset. If it would
> just append to a single dataset then it would be fine, but no that
> doesn't seem to work. Do we have a scheme in NeXus for describing how a
> set of datasets should be appended together when reading? I feel like we
> discussed a similar issue previously with a very fast 2D detector that
> would write data in sets of ~100 frames into separate files that would
> be linked to by a master file. I haven't been able to find anything on
> the topic - does anyone else remember further details?
>
> Thanks,
> Ben
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