The date is imbedded in the GameID character field so I created a date vector
with the following code:
ari18.test3$date <- substring(ari18.test3$GameID,4,11) And then created a new
dataframe with just the Game ID and date vectors. The date field is a
character as shown by the str() command. str(test)
'data.frame': 3 obs. of 2 variables:
$ GameID: Factor w/ 3 levels "ARI201803290",..: 1 2 3
$ date : chr "20180329" "20180330" "20180331" GameID date
1 ARI201803290 20180329
81 ARI201803300 20180330
165 ARI201803310 20180331
> My notes from about a week ago say that the following code will turn “date”
> into a date field: test$date <- as.Date(test$date,format="%Y %M %D") date
> becomes a date field but the data disappears into NA str(test)
'data.frame': 3 obs. of 2 variables:
$ GameID: Factor w/ 3 levels "ARI201803290",..: 1 2 3
$ date : Date, format: NA NA NA What am I missing here?
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