Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]
Groups > comp.soft-sys.math.mathematica > #1728
| From | "Sjoerd C. de Vries" <sjoerd.c.devries@gmail.com> |
|---|---|
| Newsgroups | comp.soft-sys.math.mathematica |
| Subject | Re: SortBy |
| Date | 2011-04-16 11:39 +0000 |
| Organization | Steven M. Christensen and Associates, Inc and MathTensor, Inc. |
| Message-ID | <iobv4n$bh3$1@smc.vnet.net> (permalink) |
| References | <io8to0$qbf$1@smc.vnet.net> |
Easy indeed:
SortBy[{{300, 48, 2}, {500, 23, 5}, {120, 55, 7}, {40, 32,
1}}, #[[2]] &]
Cheers -- Sjoerd
On Apr 15, 9:56 am, graser <gra...@gmail.com> wrote:
> Dear Mathematica group,
>
> I have a simple question for you.
>
> Let's say there is a list like
>
> KS = {{300, 48, 2}, {500, 23, 5}, {120, 55, 7}, {40, 32, 1}};
>
> I want to sort it by second element.
>
> I can use
>
> Sort[KS, #2[[2]] > #1[[2]] &]
>
> It gives out like
>
> {{500, 23, 5}, {40, 32, 1}, {300, 48, 2}, {120, 55, 7}}
>
> But if I want to use SortBy, how to do that?
>
> SortBy[KS, ??]
>
> Thanks!
Back to comp.soft-sys.math.mathematica | Previous | Next — Previous in thread | Next in thread | Find similar | Unroll thread
SortBy graser <graser@gmail.com> - 2011-04-15 07:56 +0000 Re: SortBy Peter Pein <petsie@dordos.net> - 2011-04-16 11:34 +0000 Re: SortBy Albert Retey <awnl@gmx-topmail.de> - 2011-04-16 11:38 +0000 Re: SortBy Peter Breitfeld <phbrf@t-online.de> - 2011-04-16 11:38 +0000 Re: SortBy "Sjoerd C. de Vries" <sjoerd.c.devries@gmail.com> - 2011-04-16 11:39 +0000 Re: SortBy Helen Read <readhpr@gmail.com> - 2011-04-16 11:32 +0000
csiph-web