Re: [Pytables-users] Suggestions for storing mutlidimensionnal data in several pytables arrays

[Francesc A. <fa...@ca...>]

El dv 02 de 09 del 2005 a les 17:28 +0200, en/na
phi...@ho... va escriure:
> Hi Francesc and all others pytables users/developpers,
>=20
> I have structured data: atmospheric pressure which depends from=20
> latitute, longitude and time.
> The problem is i can't use pytables Table due to the application=20
> capabilities involved to manage the file.

Uh, you mean limitations specific of pytables or other kind of
limitations?

>=20
> The unique solution i have is to store each data in an array (pressure=20
> is a multidimensionnal array, time is an array, longitude is an array=20
> and latitude is an array).
>=20
> Then i have to use a specific attributes to retrieve the right=20
> assiocation between parameters and pressure.
>=20
> 1. Is there a possibility to put a multidimensionnal attributes, which=20
> can consist in the list containing the path of the parameters=20
> ([/longitude,/latitute,/time]) ?
> So i know the first dimension of the pressure array is the longitude,=20
> the second the latitude, the third the time and the last one the values=20
> of the pressure.

I don't know exactly what you are trying to do, but, in general, you can
save any kind of python object as an attribute. However, if this object
has not a direct mapping with a multimensional (or scalar) atomic (i.e.
byte, char, int or float) HDF5 type, then it's pickled.

> 2. Would it be out of context to think about a standard way to link=20
> inside pytables, the dimension of a multidimensionnal array to the array=20
> defining the parameters values comparably to Netcdf ?

Can you be a bit more explicit on what you want exactly?

Cheers,

--=20
>0,0<   Francesc Altet     http://www.carabos.com/
V   V   C=E1rabos Coop. V.   Enjoy Data
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