Hi Peter,
I worked out a neat function to add the century to short dates. It
works fine on its own, but sadly it bombs when used with sapply. Maybe
someone else can point out my mistake:
add_century<-function(x,changeover=68,previous=19,current=20,pos=1,sep="-") {
xsplit<-unlist(strsplit(x,sep))
Hi Peter,
One way is to process the strings before converting them to dates:
x2<-c("45-12-03","01-06-24","04-9-15","1901-03-04")
add_century<-function(x,changeover=68,previous=19,current=20) {
centuries<-sapply(sapply(x,strsplit,"-"),"[",1)
shortyears<-which(!(nchar(centuries)>2))
century<-rep(
5 april 2020 20:31
To: r-help@r-project.org
Subject: [R] parsing DOB data
I have a data set (.csv) with date (eg date of birth) information stored as
character vectors that I’m attempting to transform to POSIXct objects using the
package lubridate (1.7.4). The problem that I’m trying to address is tha
I have a data set (.csv) with date (eg date of birth) information stored as
character vectors that I’m attempting to transform to POSIXct objects using the
package lubridate (1.7.4). The problem that I’m trying to address is that my
two digit years are invariably (?) parsed to 20xx. For example,
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