Create structure to incorporate PDB definitions into NeXus

[yayahjb]

As per March 2017 HDRMX meeting in Lund, create a structure to incorporate PDB definitions into NeXus, possibly as a new NXpdb base class.

[zjttoefs]

Herbert will discuss at the ACA meeting 26th May. If there could be some idea of how we want to implement that, that would be good.

[prjemian]

@yayahjb : bump

[mkoennecke]

I had a look at this. Looks good for the time being. But I would like to see an example where a more completed PDB file has been mapped.

Then I have a suggestion: Currently the NXpdb class s used for the main entry and for all groups underneath it. I suggest to name the top level NXpdb_container in order to mark it more clearly as a the root of a hierarchy following NeXus PDB conventions.

[zjttoefs]

We are waiting for the conversion tool that codifies the PDB <-> NeXus translation for this to be merged/closed. (#614)

[yayahjb]

As per NIAC 2018, have added example files, in nexusformat/exampledata/nxpdb, produced using the conversion tool in CBFlib. Will extract the conversion tool, package it and put it in nexusformat by next week.

[prjemian]

2020 Code Camp decide to close this issue as resolved by PR #614.