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Groups > comp.soft-sys.math.mathematica > #1720
| From | Heike Gramberg <heike.gramberg@gmail.com> |
|---|---|
| Newsgroups | comp.soft-sys.math.mathematica |
| Subject | Re: SortBy |
| Date | 2011-04-16 11:36 +0000 |
| Organization | Steven M. Christensen and Associates, Inc and MathTensor, Inc. |
| Message-ID | <iobuvf$ben$1@smc.vnet.net> (permalink) |
SortBy[KS, #[[2]] &]
Heike
On 15 Apr 2011, at 08:56, graser 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!
>
>
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Re: SortBy Heike Gramberg <heike.gramberg@gmail.com> - 2011-04-16 11:36 +0000
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