[R] basic help with as.Date()

Simon Kiss sjkiss at gmail.com
Thu Mar 26 22:11:50 CET 2015

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')

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