Re: [h5md-user] particle number

[Peter Colberg]

Hi Pierre, hi Felix,

With regard to the dataset versus attribute question, I strongly
suggest to thoroughly read the parts of the HDF5 documentation [1]
on this topic. In particular, it is essential that you study the
Advanced Topics in HDF5 [2], especially Chunking and Metadata.

[1] http://www.hdfgroup.org/HDF5/doc/
[2] http://www.hdfgroup.org/HDF5/doc/Advanced.html

Attributes are an efficient means to store small data as part of an
HDF5 object. Thus it is a very good idea to use attributes for any
kind of simulation parameters, whether scalar or multi-dimensional.

Peter