[Pytables-users] NetCDF 4

[Norbert N. <Nor...@gm...>]

Hi there,

has anybody considered merging ideas from netcdf-4 into pytables?

 http://my.unidata.ucar.edu/content/software/netcdf/netcdf-4/index.html

I have used NetCDF in the past to store my data. Now since I use HDF5, I badly 
miss the concept of 'dimensions' from NetCDF.

In short pseudonotation:
I want to store the result of a function
 f(x,y,time)
as well as another (time independent) function
 g(x,y)
with
 x in range(0.0,2.0,0.1)
 y in range(-1.0,1.0,0.1)
 time in range(0.0,500.0,10.0)

NetCDF allows me to first define the dimensions 'x','y' and 'time' and then
write datasets (arrays) that extend in a certain subset of these dimensions.

Now, NetCDF 4 is a project to implement NetCDF datastructures on top of HDF5, 
meaning that the metadata needed to store such dependencies is somehow put 
into existing HDF5 metadata.

In pytables, I can certainly think up my own convention how to store such data 
conveniently, but why should everybody have to reinvent the wheel? Offering 
and supporting conventions for this common case of use might certainly be an 
idea for PyTables.

Greetings,
Norbert Nemec

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