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<== Date ==> <== Thread ==>
Subject: Re: How do you generate nexus files?
From: Matt Newville <[email protected]>
To: Gabriel de Souza Fedel <[email protected]>
Cc: "[email protected]" <[email protected]>
Date: Wed, 9 May 2018 07:22:16 -0500
Hi Gabriel,

On Wed, May 9, 2018 at 6:56 AM, Gabriel de Souza Fedel <[email protected]> wrote:
Hi,

Here at Brazilian Synchrotron (LNLS) we are working to implement nexus on some beamlines. We are working with python, getting all data from epics PVs and build nexus files. On all the cases the most important data are waveforms.

We would like to analyses other possibilities, and to verify how other synchrotrons generate nexus files:

Do you are working with nexus files?

Yes, many beamline groups at the APS use nexus, especially in the sense that nexus is HDF5+naming conventions.

How do you generate them?
Are you using some high level language for it (like python, c++) ?

From python, nexpy (https://github.com/nexpy/nexpy) is very useful for working with nexus data, either from plain python programs, or from its very nice GUI.  You can also sort of "roll your own" by using HDF5 + the nexus conventions.  That's probably not "recommended", but it can work in a pinch.

Is it possible to generate nexus files using areadetector for instance (with more than one "source", including waveform) ?

Yes, there is a nexus plugin for areadetector.  In addition, the HDF5 plugin follows (as far as I know) the nexus conventions, and can also be discovered and handled well by nexus tools.

--Matt Newville
Replies:
Re: How do you generate nexus files? Pete Jemian
Re: How do you generate nexus files? Gabriel de Souza Fedel
References:
How do you generate nexus files? Gabriel de Souza Fedel
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