[Nexus] NXgetinfo for NX_CHAR datasets (HDF5 ONLY!!)
Mark.Koennecke at psi.ch
Mon Mar 29 07:50:36 BST 2004
Dear Hartmut Gilde,
On Fri, 26 Mar 2004, Hartmut Gilde wrote:
> Hi all,
> i forgot to mention, that the behaviour of NXgetinfo for NX_CHAR datasets
> described above only arises when using HDF5 as the underlying Format.
> With HDF4, NXgetinfo returns exactly what we would expect.
sorry I was away from the office for a couple of days. This answers
one of the questions I would have asked. NXgetinfo is supposed to
behave the same independent of HDF4 or HDF5. If it doesn't this is a
bug. As the HDF4 and HDF5 implementation use different libraries this
may have happened.
The second question is the sequence of calls you use. You need:
to get proper results. NXmakedata does not open the dataset. If you call
NXgetinfo without a dataset open, the results are undefined and
NXgetinfo should return NX_ERROR. Did you check for this? Please send a
snippet of code which exhibits the problem so that we can look at it
and solve the issue.
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