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Re: position of matrix elements for intervals

• To: mathgroup at smc.vnet.net
• Subject: [mg78469] Re: [mg78426] position of matrix elements for intervals
• From: Andrzej Kozlowski <akoz at mimuw.edu.pl>
• Date: Mon, 2 Jul 2007 06:57:21 -0400 (EDT)
• References: <200707011144.HAA15095@smc.vnet.net>

On 1 Jul 2007, at 20:44, kristoph wrote:

> Hi,
>
> Assume you have the following table:
>
> {{1, 1.`, 0.9999999932328848`}, {1.`, 0.9985849617864345`,
>       3.7570598417296495`*^-108}, {0.9999999999267634`,
>       4.0643593704937925`*^-207, 0}}
>
> I would like the position of all the elements >= 0.99. Or the position
> of all the elements of [0.4, 0.9] which in the above table does make a
> lot of sense.
> I'm familiar with Position[...,.] but since I look for reals of an
> interval I would kindly ask for help.
>
> Thanks a lot,
> Kristoph
>
>

Position[l, _?(IntervalMemberQ[Interval[{0.4, 0.9}], #] &)]

will do it, where l is your table.

Andrzej Kozlowski

• References:
  • position of matrix elements for intervals
    • From: kristoph <kristophs.post@web.de>