[Nexus] questions about NXxas app definition

Pete Jemian prjemian at gmail.com
Wed Aug 29 16:07:12 BST 2012


You are right on both items.  These were not found during editing.
I'll update the SVN trunk today.

Thank you.

Pete

On 8/27/2012 1:47 AM, Carlos Pascual wrote:
>
> Hello,
>
> I am trying to write a NXxas file following the Application definition from the
> the "NeXus Reference" document, and I have two questions/doubts about it:
>
> a) The monochromator energy appears as NX_CHAR type (and this is also the case
> for the NXxasproc application definition). I would expect it to be NX_FLOAT
> instead (that would be consistent with the NXmonochromator class definition). I
> see that the source XML file [1] does not include any explicit type for this
> field, so I wonder if it might be a mistake in the definition (which should be
> explicit) or in the script that generates the NeXus Reference (which perhaps
> defaults to NX_CHAR if no explicit type is defined?).
>
> b) The link in the NXdata group to the absorbed beam is made to
> "/entry/instrument/absorbed_beam"  (which is a NXdetector group). I would
> expect it to be to "/entry/instrument/absorbed_beam/data"  (an NXfield)
>
> Can somebody please clarify these things?
>
> Cheers!
>
> Carlos
>
> Refs:
> [1]http://svn.nexusformat.org/definitions/trunk/applications/NXxas.nxdl.xml
>


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