Re: 970618: NetCDF Question. Please help me

> From: "Larisa Kalacheva" <address@hidden>
> To: <address@hidden>
> Cc: <address@hidden>
> Subject: Re: 970618: NetCDF Question. Please help me 

Hi Larisa,

> Sorry but I have two more questions during writing program for netCDF
> direct date access.
> 
> 1)    When I take real *.cdf files containing information I found that header
> of this file does not mach BNF form specified in Unidate documentation.
> Till the description of variables all is ok. But when I start reading
> variables I found that data does not mach BNF form. I can read correctly
> only name and three last values (offset, size, and type) and order of the
> other values differs from one variable to another.  So is there any more
> rules than written in BNF form?

I'm not aware of any problem with our documented format specification,
in Appendix B of the User's Guide, for example

  http://www.unidata.ucar.edu/staff/russ/netcdf/guidec/guidec-18.html

Could you provide a small example of a netCDF file (in CDL form or
binary form) for which the on disk form does not correspond to the
format specification?

> 2)    Where can I find specification for netCDF format developed for mass
> spectroscopy? (I mean netCDF designed for spectroscopy)

Here's the only information that I have, though it's not very recent:

  NetCDF is the vehicle adopted by the Analytical Instrument Association
  [AIA] to implement the Analytical Data Interchange Protocols [Andi
  Protocols] for chromatography [released in 1992] and mass spectrometry
  [released in 1994]. This is an ongoing effort which includes adapting
  Andi Protocols for new data file types. The Andi Protocols increase
  laboratory efficiency and productivity by facilitating the integration
  and use of data from multiple vendors' products. For more information
  about the Andi Protocols and AIA, see
  http://www.ultranet.com/~lasf/andi.html.

> Thanks! 
> Larisa Kalacheva, Pavel Ivanov.
> Moscow State University.

--Russ

_____________________________________________________________________

Russ Rew                                         UCAR Unidata Program
address@hidden                     http://www.unidata.ucar.edu