Re: [R] data frame manipulation ddply

to aggregate > -Original Message- > From: Patrick Hausmann [mailto:patrick.hausm...@uni-bremen.de] > Sent: Tuesday, June 01, 2010 11:38 AM > To: arnaud Gaboury > Subject: Re: [R] data frame manipulation ddply > > Hi Arnaud, > > maybe "agg

[R] data frame manipulation ddply

Dear group, Here is my data frame: futures <- structure(list(DESCRIPTION = c("CORN Jul/10", "CORN Jul/10", "CORN Jul/10", "CORN Jul/10", "CORN Jul/10", "LIVE CATTLE Aug/10", "LIVE CATTLE Aug/10", "SUGAR NO.11 Jul/10", "SUGAR NO.11 Jul/10", "SUGAR NO.11 Jul/10", "SUGAR NO.11 Jul/10", "SUGAR NO