Displaying 1 result from an estimated 1 matches for "31jul".
2012 Jul 31
3
year extraction over a list
Hello,
I have a data frame, one element in that data frame is a LIST, with each element being a character string. I am trying to extract the first year listed in each of those character strings. The character elements are typically csv, but the position of the year can vary (think citations with varying citation standards). I.e.,
foo$a
[[1]]
[1] text, text, 2001, text
[2] text, 2000, text
[3]