Re: How to "search" in a matrix?

*To*: mathgroup at smc.vnet.net*Subject*: [mg60907] Re: [mg60892] How to "search" in a matrix?*From*: "David Park" <djmp at earthlink.net>*Date*: Mon, 3 Oct 2005 04:06:05 -0400 (EDT)*Sender*: owner-wri-mathgroup at wolfram.com

Renan, Use Position. matr = {{a, b, 1}, {c, d, 2}, {e, f, 3}}; Position[matr, e] {{3, 1}} David Park djmp at earthlink.net http://home.earthlink.net/~djmp/ From: Renan [mailto:renan.birck at gmail.com] To: mathgroup at smc.vnet.net I have this matrix: matr = {{a, b, 1}, {c, d, 2}, {e, f, 3}} I'm trying to do a "search" in a matrix. The "real" matrix will contain strings. How to "search" for a given value in a matrix and return all lines that have it? 'Select' seems to handle only lists - and this would require a Flatten, probably making my code too complicated and maybe slow (the real matrix will contain something like 100 elements - weather data). Thanks.