Re: Sorting Rows of a Matrix
- To: mathgroup at smc.vnet.net
- Subject: [mg65118] Re: Sorting Rows of a Matrix
- From: "Jens-Peer Kuska" <kuska at informatik.uni-leipzig.de>
- Date: Wed, 15 Mar 2006 06:28:34 -0500 (EST)
- Organization: Uni Leipzig
- References: <dv69a6$o6l$1@smc.vnet.net>
- Sender: owner-wri-mathgroup at wolfram.com
Hi,
since you don't provide an example I have to make
my own and
come to:
Table[Random[], {j, 12}, {i, 2}] // Sort[#,
#1[[2]] < #2[[2]] &] &
Regards
Jens
"Gregory Lypny" <gregory.lypny at videotron.ca>
schrieb im Newsbeitrag
news:dv69a6$o6l$1 at smc.vnet.net...
| 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?
|
| Regards,
|
| Greg
|