[Date Index] [Thread Index] [Author Index]

Re: Sorting Rows of a Matrix

• To: mathgroup at smc.vnet.net
• Subject: [mg65112] Re: [mg65089] Sorting Rows of a Matrix
• From: Sseziwa Mukasa <mukasa at jeol.com>
• Date: Wed, 15 Mar 2006 06:28:24 -0500 (EST)
• References: <200603141100.GAA24159@smc.vnet.net>
• Sender: owner-wri-mathgroup at wolfram.com

On Mar 14, 2006, at 6:00 AM, Gregory Lypny wrote:

> Hello everyone,
>
> How can I sort the rows of a matrix by using one or more of the
> columns as sort keys just like in a spreadsheet?  For example, if
> matrix M is 12 x 2 with numbers in the first column and unordered
> month numbers in the second, how would I order the rows by month?

Sort[list,#1[[2]]<#2[[2]]&]

Regards,

Ssezi

• References:
  • Sorting Rows of a Matrix
    • From: Gregory Lypny <gregory.lypny@videotron.ca>