Path: csiph.com!v102.xanadu-bbs.net!xanadu-bbs.net!feeder.erje.net!eu.feeder.erje.net!newsfeed.xs4all.nl!newsfeed3.news.xs4all.nl!xs4all!newsgate.cistron.nl!newsgate.news.xs4all.nl!post.news.xs4all.nl!not-for-mail
Return-Path: <manolo@austrohungaro.com>
X-Original-To: python-list@python.org
Delivered-To: python-list@mail.python.org
X-Spam-Status: OK 0.052
X-Spam-Evidence: '*H*': 0.91; '*S*': 0.01; 'cc:addr:python-list': 0.11; 'direct,': 0.16; 'none]': 0.16; 'numpy': 0.16; 'subject:array': 0.16; 'wrote:': 0.18; 'meant': 0.20; 'command': 0.22; 'cc:addr:python.org': 0.22; 'header:User-Agent:1': 0.23; 'sorry,': 0.24; 'cc:2**0': 0.24; 'cc:no real name:2**0': 0.24; 'header:In-Reply-To:1': 0.27; 'received:84': 0.35; 'there': 0.35; 'two': 0.37; 'expression': 0.60; 'content-disposition:inline': 0.62; 'received:82.223': 0.84; 'mr.': 0.98
Date: Fri, 20 Mar 2015 14:14:11 +0100
From: Manolo =?iso-8859-1?Q?Mart=EDnez?= <manolo@austrohungaro.com>
To: "Mr. Twister" <mr@twister.com>
Cc: python-list@python.org
Subject: Re: numpy array product driving me mad
References: <meh4s3$sd4$1@speranza.aioe.org> <20150320131145.GA23176@beagle>
MIME-Version: 1.0
Content-Type: text/plain; charset=iso-8859-1
Content-Disposition: inline
Content-Transfer-Encoding: 8bit
In-Reply-To: <20150320131145.GA23176@beagle>
User-Agent: Mutt/1.5.23 (2014-03-12)
X-BeenThere: python-list@python.org
X-Mailman-Version: 2.1.19
Precedence: list
List-Id: General discussion list for the Python programming language <python-list.python.org>
List-Unsubscribe: <https://mail.python.org/mailman/options/python-list>, <mailto:python-list-request@python.org?subject=unsubscribe>
List-Archive: <http://mail.python.org/pipermail/python-list/>
List-Post: <mailto:python-list@python.org>
List-Help: <mailto:python-list-request@python.org?subject=help>
List-Subscribe: <https://mail.python.org/mailman/listinfo/python-list>, <mailto:python-list-request@python.org?subject=subscribe>
Newsgroups: comp.lang.python
Message-ID: <mailman.39.1426857853.10327.python-list@python.org>
Lines: 18
NNTP-Posting-Host: 2001:888:2000:d::a6
X-Trace: 1426857853 news.xs4all.nl 2963 [2001:888:2000:d::a6]:45074
X-Complaints-To: abuse@xs4all.nl
Xref: csiph.com comp.lang.python:87777

On 03/20/15 at 02:11pm, Manolo Martínez wrote:
> On 03/20/15 at 01:46pm, Mr. Twister wrote:
>  
> > I have two numpy arrays:

[...] 

> > Is there a direct, single expression command to get this result? 
> 
> I think that you want 
> 
>     P * R[;,None]

Sorry, I meant 

    P * R[:, None]

Manolo