Re: Map onto one column of a matrix
- To: mathgroup at smc.vnet.net
- Subject: [mg96052] Re: Map onto one column of a matrix
- From: "D. Grady" <D.C.Grady at gmail.com>
- Date: Tue, 3 Feb 2009 06:32:41 -0500 (EST)
- References: <gl49tb$g7v$1@smc.vnet.net> <gl71no$bvl$1@smc.vnet.net>
Thanks everyone for all the good suggestions! I tried a haphazard timing for several of these; my test case was a 800000 x 2 array where the first column is a bunch of strings that need to be split apart. The slowest took about 5 seconds and the fastest about 4, which is a marginal difference for my purposes. Daniel W's MapAtLevel I think is particularly elegant. -Daniel