Hi all,
I have a date issue and would appreciate any help.
I am reading a field data and n one of the columns I am expecting a
date but has non date values such as character and empty. space.
Here is a sample of my data.
KL <- read.table(header=TRUE, text='ID date
711 Dead
712 Uknown
713 20-11-08
714 11-28-07
301
302 09-02-02
303 09-21-02',stringsAsFactors = FALSE, fill =T)
str(KL)
data.frame': 7 obs. of 2 variables:
$ ID : int 711 712 713 714 301 302 303
$ date: chr "Dead" "Uknown" "20-11-08" "11-28-07" .
I wanted to convert the date column as follows.
if (max(unique(nchar(as.character(KL$date))))==10) {
KL$date <- as.Date(KL$date,"%m/%d/%Y")
}
but not working.
How could I to remove the corresponding entire row. that do not have
a date format and do the operation?
thank you in advance
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