[Nexus] NeXus facility survey

[Carlos Pascual]

Hi, here are the answers for Alba (sorry for the late reply, I am just 
back from holidays)

Facility Name: 
Alba

Facility Logo URL: 
http://www.cells.es/logo.png

Total number of beamlines/instruments: 
7 BLs 

NeXus is written on this many beamlines/instruments: 
7

NeXus is the primary format for this many of them: 
7

We are using the following back ends (valid choices HDF5, HDF4, XML): 
HDF5

Any migration plans for the future: 
No

Recent developments: 
Only minor improvements in our 

We use the following software packages to browse, analyse or process 
NeXus:
Sardana (our control system) writes, browses and shows NeXus data,  
PyMca, Hdfview, imagej, custom python scripts and GUIs,...

The following application definitions are in use here:
NXscan 
NXtomo 

An average NeXus file contains this many datasets:
(this produces that number:  nxdir -p . FILENAME | grep -v \# | wc -l)
Our files typically contain many *entries* (e.g. all the scans done 
during a certain experiment). Each entry usually contains many datasets 
(in the order of 20 and many of them duplicated via links)

Just to provide a number, the proposed command for a randomly picked file  
returns:
~> nxdir -p . 20140520.h5 | grep -v \# | wc -l
3830


We use NAPI for writing: 
Yes

For reading: 
Yes, but not exclusively. We also use h5py



On Thu 4 September 2014 16:44:36 Tobias.Richter at diamond.ac.uk wrote:
> I have the pleasure of giving the traditional talk about the state of
> NeXus at this year's NOBUGS conference. Ideally I could get an up to
> date picture of NeXus use at the different facilities from
> http://wiki.nexusformat.org/Facilities Unfortunately that page has
> only been edited twice in the last two years. That is why I need to
> ask here.
> 
> On the plus side that means I can ask for a bit more information than
> traditionally is on the wiki page. Below is a list of things I might
> like to know. If you have interesting graphs (NeXus files per year or
> the like) or additional data you would like to share, please!
> 
> Facility Name:
> Facility Logo URL:
> Total number of beamlines/instruments:
> NeXus is written on this many beamlines/instruments:
> NeXus is the primary format for this many of them:
> We are using the following back ends (valid choices HDF5, HDF4, XML):
> Any migration plans for the future:
> Recent developments:
> We use the following software packages to browse, analyse or process
> NeXus: The following application definitions are in use here:
> An average NeXus file contains this many datasets:
> (this produces that number:  nxdir -p . FILENAME | grep -v \# | wc -l)
> We use NAPI for writing:
> For reading:
> 
> There is no formal deadline. What I receive in more than ten days time
> may not end up being used for the talk, though. Things can still go
> up on the wiki page after that date though.
> 
> Thanks,
> 
> Tobias
> 
> 
> 
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-- 
+----------------------------------------------------+
 Carlos Pascual Izarra
 Scientific Software Coordinator
 Computing Division
 ALBA Synchrotron  [http://www.albasynchrotron.es]
 Carretera BP 1413 de Cerdanyola-Sant Cugat, Km. 3.3
 E-08290 Cerdanyola del Valles (Barcelona), Spain
 E-mail: cpascual at cells.es
 Phone: +34 93 592 4428
+----------------------------------------------------+