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From: Eric S Fraga <e.fraga@ucl.ac.uk>
To: help-gnu-emacs@gnu.org
Subject: Re: Using Calc
Date: Wed, 05 May 2021 12:39:23 +0100	[thread overview]
Message-ID: <874kfhwgt0.fsf@ucl.ac.uk> (raw)
In-Reply-To: trinity-5814b7ed-2eff-4051-9958-79f972fa972c-1620214307349@3c-app-mailcom-bs16

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




  reply	other threads:[~2021-05-05 11:39 UTC|newest]

Thread overview: 30+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-05-05  5:58 Using Calc Christopher Dimech
2021-05-05  6:04 ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-05-05 10:23   ` Christopher Dimech
2021-05-05 10:31     ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-05-05 10:42       ` Christopher Dimech
2021-05-05 11:15   ` Christopher Dimech
2021-05-05 11:21     ` Eric S Fraga
2021-05-05 11:31       ` Christopher Dimech
2021-05-05 11:39         ` Eric S Fraga [this message]
2021-05-05 11:48           ` Christopher Dimech
2021-05-05 11:58             ` Eric S Fraga
2021-05-05 12:42               ` Christopher Dimech
2021-05-05 13:00                 ` Christopher Dimech
2021-05-05 14:16               ` Christopher Dimech
2021-05-05 21:37                 ` Nick Dokos
2021-05-05 21:53                   ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-05-06  7:18                     ` tomas
2021-05-05 11:58           ` Christopher Dimech
2021-05-05 14:58           ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-05-05 15:23             ` Christopher Dimech
2021-05-05 16:44             ` Eric S Fraga
2021-05-05 17:25               ` Stefan Monnier via Users list for the GNU Emacs text editor
2021-05-05 17:33                 ` Gregory Heytings
2021-05-05 18:52                   ` Tassilo Horn
2021-05-05 20:46                     ` Stefan Monnier via Users list for the GNU Emacs text editor
2021-05-05 21:01                       ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-05-06  7:51                       ` Gregory Heytings
2021-05-05 19:52                 ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-05-06  4:33                 ` Bob Newell
2021-05-05 14:52       ` Emanuel Berg via Users list for the GNU Emacs text editor

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