From: Alan Schmitt <alan.schmitt@polytechnique.org>
To: Rasmus <rasmus@gmx.us>
Cc: emacs-orgmode@gnu.org
Subject: Re: How to do a sum of products in a table?
Date: Fri, 14 Jun 2013 20:53:04 +0200 [thread overview]
Message-ID: <m28v2cmsmn.fsf@polytechnique.org> (raw)
In-Reply-To: <87y5ac61gn.fsf@pank.home>
Rasmus writes:
> So perhaps you'd want something like this
>
> | | Name | Grade | Question 1 | Question 2 | Question 3 |
> | ! | | grade | q1 | | q3 |
> | _ | | g | | | |
> | / | Coeff | 6 | 1 | 3 | 2 |
> |---+-----------+-----------+------------+------------+------------|
> | * | Foo | 6.67 | 1/2 | 1 | 1/4 |
> | * | Bar | 6.67 | 1 | 1 | 0 |
> | * | Baz | 7.5 | 1 | 3/2 | -1/2 |
> |---+-----------+-----------+------------+------------+------------|
> | _ | | mean | | max | |
> | | Mean | 6.9444445 | std.dev. | 0.48112521 | |
> | $ | Constants | magic=10 | | | |
> |---+-----------+-----------+------------+------------+------------|
> #+TBLFM: $g=vsum($q1..$q3):: $3=round(@I-1$q1..@I-1$q3*$q1..$q3*$magic/$g,2)::
> #+TBLFM: $mean=vmean(@I$grade..II$grade)::$max=vsdev(@I$grade..II$grade)
>
> It even exports pretty tables so you could hardly wish for more.
Thanks, this is great! I had no idea multiplying ranges would do the
right thing.
Thanks again,
Alan
prev parent reply other threads:[~2013-06-14 18:53 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-06-14 14:09 How to do a sum of products in a table? Alan Schmitt
2013-06-14 15:13 ` Rasmus
2013-06-14 16:49 ` Alan Schmitt
2013-06-14 17:34 ` Rasmus
2013-06-14 18:53 ` Alan Schmitt [this message]
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