[R] remove

[Jeff Newmiller]

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 <valkremk at 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
>
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