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Re: With Nearest

  • To: mathgroup at smc.vnet.net
  • Subject: [mg121092] Re: With Nearest
  • From: Heike Gramberg <heike.gramberg at gmail.com>
  • Date: Sun, 28 Aug 2011 04:03:41 -0400 (EDT)
  • Delivered-to: l-mathgroup@mail-archive0.wolfram.com
  • References: <201108271217.IAA17756@smc.vnet.net>

You'll need to specify a suitable DistanceFunction, for example

AA = {{1.3, 1.5}, {21.5, 23.6}, {10, 19}};
Nearest[AA, 20, DistanceFunction :> (Norm[#2[[2]] - #1] &)]

Heike.

On 27 Aug 2011, at 14:17, graser wrote:

> Dear Mathematica group,
> I have a simple question for you.
> Let's say there is an array or matrix like
> 
> AA = {{1.3, 1.5}, {21.5, 23.6}, {10, 19}};
> 
> If I want to extract a list whose second element is close to 20, How
> can I do it with Nearest function?
> Or is there any other method possible?
> ( In this case, the answer should be {10, 19} )
> 
> Thanks!
> 
> 





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