Yes I was talking about 'appending'. If I have 10 files with the exact same
structure. Is there an easy way to get one large file with all the data
merged? 

The ticket for the min max:

http://www.pytables.org/trac/ticket/217

Ticket for limit is:

http://www.pytables.org/trac/ticket/242

Thanks,

Vineet


-----Original Message-----
From: Francesc Alted [mailto:fal...@pytables.org] 
Sent: Wednesday, September 16, 2009 11:06 AM
To: pytables-users@lists.sourceforge.net
Subject: Re: [Pytables-users] Is it possible to merge multiple pytable files
with the same structure

Hi Vineet,

A Tuesday 15 September 2009 02:12:04 Vineet Jain escrigué:
> I have multiple servers which publish data to pickle files. Then I have a
> scheduler which combines the data. I'm currently trying out pytables and
> was wondering if there is an easy way to combine multiple hd5, with the
> same structure, into one file.

It exists the command `ptrepack`, although it will just let you add (or 
overwrite) datasets in already existing files.  But I think you mean 
*appending* datasets over already existing leaves, right?  Unfortunately,  
`ptrepack` does not support this.  However, you may want to have a look at
its 
implementation: a slight modification of it would fit your requirements.

> Also: (It seems there are feature/bug requests for there, just wanted to
> add a voice to them)
>
> -          For indexed tables, it would be nice to have min and max
>
> -          It would be nice to have the equivalent of 'limit' in sql to
> pytables

OK.  Could you add a ticket for the min and max in indexed queries?

Cheers,

-- 
Francesc Alted

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