[Nexus] Reading generic h5 files.

[Akeroyd, FA (Freddie)]

Brian,

The latest NAPI source code development snapshot from

http://download.nexusformat.org/

will read generic HDF5 files created by Matlab (just checked it by
generating a file and then reading it with the NXbrowse utility). There
were only a few changes needed - these are detailed at

http://svn.nexusformat.org/viewvc/NeXusCode/trunk/src/napi5.c?r1=854&r2=
855

and could probably be applied directly to your napi 3.0.0 distribution.
To skip group attribute checking, you should pass either NULL or ""
(empty string) to NXopengroup(). NXgetnextentry() will return "" for the
class if the relevant attribute is not present.

Regards, 

Freddie

-----Original Message-----
From: nexus-bounces at nexusformat.org
[mailto:nexus-bounces at nexusformat.org] On Behalf Of tieman
Sent: 22 February 2007 14:41
To: Mark Koennecke
Cc: nexus at nexusformat.org
Subject: Re: [Nexus] Reading generic h5 files.

Mark,
> On the other hand I think (no guarantees though) it suffices to add a 
> NX_class attribute to all groups except / in those non standard HDF-5 
> files. The
> file attributes are only written by the API when a new file is opened 
> but never checked after that.
>
>   
We're working to try and verify this but it might take a few days to get

to it.  If it works, we're back in business!

Thanks!

Brian

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