search for: later_date

Displaying 1 result from an estimated 1 matches for "later_date".

2011 Mar 21
1
Trouble with simple R list concatenations
...M How can I concatenate the following lists into ONE LIST WITHOUT the unhelpful message "operator is invalid for atomic vectors"? Combine as a data frame? EXAMPLE Birth_Date <- NULL Birth_Date[1:3] <- c("01/17/1939","01/17/1949", "01/17/1959") Later_Date <- NULL Later_Date[1:3] <- c("01/17/2009", NA, NA) Names <- NULL Names[1:3] <- c("Martha Smith", "John Doe", "Rufus Nobody") #this does not work family <- c(Birth_Date, Later_Date, Names) family$Birth_Date Error in...