Find index of maximal element in multi-dimensional array
- To: mathgroup at smc.vnet.net
- Subject: [mg73492] Find index of maximal element in multi-dimensional array
- From: "Andrew Moylan" <andrew.j.moylan at gmail.com>
- Date: Tue, 20 Feb 2007 06:15:47 -0500 (EST)
Hi all, Here's a two-dimensional array of numbers: z = Table[Random[], {5}, {6}] What's an efficient way of finding the index of the maximal element of z? Here's one way: Last[Sort[Flatten[MapIndexed[{#2, #1} & , z, {2}], 1], OrderedQ[{#1[[2]], #2[[2]]}] & ]] The output is like this: {{5, 4}, 0.921344} But it's so untidy. Any better ideas? Cheers, Andrew
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