[R] basic help with as.Date()

[Simon Kiss]

Hi there: normally I’m quite comfortable with as.Date(). But this data set is causing problems.

The core of the data frame looks like the sample data frame below, but my attempt to convert df$mydate to a date object returns only NA. Can anyone provide a suggestion?

Thank you, Simon Kiss

#sample data frame
df<-data.frame(mydate=factor(c('Jan-15', 'Feb-13', 'Mar-11', 'Jul-12')), other=rnorm(4, 3))
#Attempt to convert
as.Date(as.character(df$mydate), format='%b-%y')