From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Eric S Fraga Newsgroups: gmane.emacs.help Subject: Re: Using Calc Date: Wed, 05 May 2021 12:39:23 +0100 Organization: On the Interweb somewhere Message-ID: <874kfhwgt0.fsf@ucl.ac.uk> References: <877dkdd8d2.fsf@zoho.eu> <878s4twhmh.fsf@ucl.ac.uk> Mime-Version: 1.0 Content-Type: text/plain Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="7751"; mail-complaints-to="usenet@ciao.gmane.io" User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/28.0.50 (gnu/linux) To: help-gnu-emacs@gnu.org Cancel-Lock: sha1:9J597Lnla8oXISjoC93kV3JZG9I= Original-X-From: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane-mx.org@gnu.org Wed May 05 13:40:40 2021 Return-path: Envelope-to: geh-help-gnu-emacs@m.gmane-mx.org Original-Received: from lists.gnu.org ([209.51.188.17]) by ciao.gmane.io with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1leFtQ-0001sO-FO for geh-help-gnu-emacs@m.gmane-mx.org; Wed, 05 May 2021 13:40:40 +0200 Original-Received: from localhost ([::1]:44430 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1leFtO-0001Ad-Na for geh-help-gnu-emacs@m.gmane-mx.org; Wed, 05 May 2021 07:40:38 -0400 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:57008) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1leFsK-0001AR-Dj for help-gnu-emacs@gnu.org; Wed, 05 May 2021 07:39:32 -0400 Original-Received: from ciao.gmane.io ([116.202.254.214]:60142) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1leFsI-0001SS-Rq for help-gnu-emacs@gnu.org; Wed, 05 May 2021 07:39:32 -0400 Original-Received: from list by ciao.gmane.io with local (Exim 4.92) (envelope-from ) id 1leFsG-0000JM-0L for help-gnu-emacs@gnu.org; Wed, 05 May 2021 13:39:28 +0200 X-Injected-Via-Gmane: http://gmane.org/ X-Url: http://twitter.com/ericsfraga/ Received-SPF: pass client-ip=116.202.254.214; envelope-from=geh-help-gnu-emacs@m.gmane-mx.org; helo=ciao.gmane.io X-Spam_score_int: -16 X-Spam_score: -1.7 X-Spam_bar: - X-Spam_report: (-1.7 / 5.0 requ) BAYES_00=-1.9, HEADER_FROM_DIFFERENT_DOMAINS=0.249, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=no autolearn_force=no X-Spam_action: no action X-BeenThere: help-gnu-emacs@gnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: Users list for the GNU Emacs text editor List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane-mx.org@gnu.org Original-Sender: "help-gnu-emacs" Xref: news.gmane.io gmane.emacs.help:129474 Archived-At: On Wednesday, 5 May 2021 at 13:31, Christopher Dimech wrote: > The following gets matrix multiplication > > [ [1.,2.,3.] [4.,5.,6.] [7.,8.,9.] ] * [ [9.,8.,7.] [6.,5.,4.] [3., 2.,1.] ] => > > It is then very easy to end up with very long lines. Is there a > solution to this? I get: [ [ 1., 2., 3. ] [ [ 9., 8., 7. ] [ [ 30., 24., 18. ] [ 4., 5., 6. ] * [ 6., 5., 4. ] => [ 84., 69., 54. ] [ 7., 8., 9. ] ] [ 3., 2., 1. ] ] [ 138., 114., 90. ] ] as a result so not long lines at all? Of course, if your system gets larger, there will be an issue but then I would suggest you use a different language (octave for numerics, maxima for symbolic, both usable via org babel src blocks if you wish). I.e. use the right tool for the job? -- Eric S Fraga via Emacs 28.0.50 & org 9.4.5 on Debian bullseye/sid