Reputation: 373
I have a dataframe and would like to add a new column where the values are vectors. Is this possible in R?
Thanks,
Upvotes: 3
Views: 2544
Reputation: 57686
You can store a list as part of a data frame, which is one way to have vector-valued entries. For example:
m <- data.frame(a=1:10)
m$l <- lapply(1:10, function(x) c(x, x + 1))
m$l
As an example of how this is actually used in R, a POSIXlt
date is actually a list with components giving the year, month, day, and so on. When you store such a date variable in a data frame, what is stored is a list of vectors.
Upvotes: 7