Re: [R] Create new records based on event dates in a data frame

Have used the suggested solution (the second method, as it seems a bit leaner) on my real data, and it works perfectly. Thanks. -- View this message in context: http://r.789695.n4.nabble.com/Create-new-records-based-on-event-dates-in-a-data-frame-tp4673839p4674082.html Sent from the R help mail

Re: [R] Create new records based on event dates in a data frame

Message - From: arun To: Gavin Rudge Cc: R help Sent: Thursday, August 15, 2013 10:10 AM Subject: Re: [R] Create new records based on event dates in a data frame Hi,One way would be: df<- data.frame(case,obsdate=as.Date(obsdate,format="%d/%m/%Y"),score,stringsAsFactors=F

Re: [R] Create new records based on event dates in a data frame

#5    b 2005-11-10 2011-03-31    79 #6    c 2001-04-01 2011-03-31    65 A.K. - Original Message - From: Gavin Rudge To: "'r-help@r-project.org'" Cc: Sent: Thursday, August 15, 2013 9:22 AM Subject: [R] Create new records based on event dates in a data frame One of t

[R] Create new records based on event dates in a data frame

One of those simple tasks, but I can't get to first base with it. I've got a data set of observations of subjects over a 10 year period beginning on 1st April 2001 and ending on 31st March 2011. One of may variables is a score based on an intervention on a given date. Before the intervention t