Path: csiph.com!usenet.pasdenom.info!weretis.net!feeder4.news.weretis.net!rt.uk.eu.org!newsfeed.xs4all.nl!newsfeed3.news.xs4all.nl!xs4all!post.news.xs4all.nl!not-for-mail Return-Path: X-Original-To: python-list@python.org Delivered-To: python-list@mail.python.org X-Spam-Status: OK 0.004 X-Spam-Evidence: '*H*': 0.99; '*S*': 0.00; 'from:addr:yahoo.co.uk': 0.04; 'lawrence': 0.09; 'received:80.91': 0.09; 'received:80.91.229': 0.09; 'received:gmane.org': 0.09; 'received:list': 0.09; 'rows': 0.09; 'columns': 0.16; 'csv': 0.16; 'loops': 0.16; 'numpy': 0.16; 'received:80.91.229.3': 0.16; 'received:plane.gmane.org': 0.16; 'subject:CSV': 0.16; 'subject:array': 0.16; 'wrote:': 0.18; 'input': 0.22; 'import': 0.22; 'header:User-Agent:1': 0.23; 'url:moin': 0.24; 'file.': 0.24; 'header:X-Complaints-To:1': 0.27; 'header:In-Reply-To:1': 0.27; 'function': 0.29; 'array': 0.29; "i'm": 0.30; 'url:wiki': 0.31; 'file': 0.32; 'me?': 0.32; 'thanks!': 0.32; 'url:python': 0.33; 'created': 0.35; 'but': 0.35; 'there': 0.35; 'url:org': 0.36; 'skip:o 20': 0.38; 'to:addr:python-list': 0.38; 'to:addr:python.org': 0.39; 'received:org': 0.40; 'how': 0.40; 'read': 0.60; "you're": 0.61; 'charset:windows-1252': 0.65; 'ana': 0.84; 'matrix.': 0.84; 'url:reference': 0.84 X-Injected-Via-Gmane: http://gmane.org/ To: python-list@python.org From: Mark Lawrence Subject: Re: CSV to matrix array Date: Fri, 12 Apr 2013 16:25:48 +0100 References: <2506a155-40b6-4040-bc12-a08ce0d79cd7@googlegroups.com> Mime-Version: 1.0 Content-Type: text/plain; charset=windows-1252; format=flowed Content-Transfer-Encoding: 8bit X-Gmane-NNTP-Posting-Host: host-92-18-43-197.as13285.net User-Agent: Mozilla/5.0 (Windows NT 6.0; rv:17.0) Gecko/20130328 Thunderbird/17.0.5 In-Reply-To: <2506a155-40b6-4040-bc12-a08ce0d79cd7@googlegroups.com> X-Antivirus: avast! (VPS 130412-0, 12/04/2013), Outbound message X-Antivirus-Status: Clean X-BeenThere: python-list@python.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: General discussion list for the Python programming language List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Newsgroups: comp.lang.python Message-ID: Lines: 30 NNTP-Posting-Host: 2001:888:2000:d::a6 X-Trace: 1365780305 news.xs4all.nl 2687 [2001:888:2000:d::a6]:53398 X-Complaints-To: abuse@xs4all.nl Xref: csiph.com comp.lang.python:43463 On 12/04/2013 15:22, Ana Dionísio wrote: > Hello! > > I have a CSV file with 20 rows and 12 columns and I need to store it as a matrix. I already created an array with zeros, but I don't know how to fill it with the data from the csv file. I have this script: > > import numpy > from numpy import array > from array import * > import csv > > input = open('Cenarios.csv','r') > cenario = csv.reader(input) > > array=numpy.zeros([20, 12]) > > > I know I have to use for loops but I don't know how to use it to put the data the way I want. Can you help me? > > Thanks! > I'm no expert on numpy but there is a loadtxt function see http://docs.scipy.org/doc/numpy/reference/generated/numpy.loadtxt.html -- If you're using GoogleCrap™ please read this http://wiki.python.org/moin/GoogleGroupsPython. Mark Lawrence