You are using a slash in your format string to separate sub-fields but your data uses a dash. -- Sent from my phone. Please excuse my brevity.
On June 10, 2017 8:18:37 PM PDT, Val <valkr...@gmail.com> wrote: >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 > >______________________________________________ >R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see >https://stat.ethz.ch/mailman/listinfo/r-help >PLEASE do read the posting guide >http://www.R-project.org/posting-guide.html >and provide commented, minimal, self-contained, reproducible code. ______________________________________________ R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.