[NeXus-committee] NeXus base class discussions

[Steve King]

What we're all discussing here is base classes for RAW data files.  What we 
do with treated data is a whole different question (and one that'll 
probably cause even more consternation...)!

Thus, I'm not entirely convinced that we need worry about USERS at the 
moment.  The only way that they'll interact with NeXus RAW files is through 
API's that some of this lists membership will write, or through programs 
that we in the facilities supply.

However, speaking as a beam line scientist, and someone who is supposed to 
co-write an Instrument Definition once we've reached some sort of 
agreement, I do agree with Jason that I'm having trouble at times seeing 
the wood for the trees in the discussions on the Swiki...

Also, having just read Ray's posting, I'm not sure we will be doing 
ourselves any favours by insisting on polar and azimuthal angles.  Two 
theta might not be very explicit, but it is very widely used.  It should be 
accommodated, somehow..., for those that would rather use it.

Steve King


At 16:48 16/04/2004, Jason Hodges (ORNL) wrote:
>I also have been worrying that the definitions are becoming far too
>complicated. Given that Nexus serves two communities (instrument users &
>DAS people), I think we should think of the definitions accordingly.
>First we should think of the instrument definitions, classes etc for the
>user, complexity should be kept to a minimum in this standard. This set
>of definitions is then the core standard at that is all the average user
>would ever be interested in. An expanded set of definitions can then be
>standardized (for optional use) by the DAS members etc that serves
>facilities needs for raw data/ data reduction needs etc. Of course it is
>necessary to think of both when deciding the definitions.


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