[Numpy-discussion] How to merge or SQL join record arrays in Python?
Wei Su
taste_of_r at yahoo.com
Mon May 11 18:18:03 EDT 2009
Hi, Pierre:
Thanks for the reply. I can now actually turn a big list into a record array. My question is actually how to join related record arrays in Python. This is done in SAS by MERGE and PROC SQL and by merge() in R. But I have no idea how to do it in Python.
Thanks.
Wei Su
--- On Mon, 5/11/09, Pierre GM <pgmdevlist at gmail.com> wrote:
From: Pierre GM <pgmdevlist at gmail.com>
Subject: Re: [Numpy-discussion] How to merge or SQL join record arrays in Python?
To: "Discussion of Numerical Python" <numpy-discussion at scipy.org>
Date: Monday, May 11, 2009, 10:03 PM
On May 11, 2009, at 5:44 PM, Wei Su wrote:
>
> Coming from SAS and R, this is probably the first thing I want to do
> now that I can convert my data into record arrays. But I could not
> find any clues after googling for a while. Any hint or suggestions
> will be great!
That depends what you want, actually, ut this should get you started
http://docs.scipy.org/doc/numpy/user/basics.rec.html
Note the slight difference between a structured array (fields
accessible as items) and a recarray (fields accessible as items and
attributes).
_______________________________________________
Numpy-discussion mailing list
Numpy-discussion at scipy.org
http://mail.scipy.org/mailman/listinfo/numpy-discussion
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.python.org/pipermail/numpy-discussion/attachments/20090511/af50fd7f/attachment.html>
More information about the NumPy-Discussion
mailing list