diff options
| -rw-r--r-- | r.html.markdown | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/r.html.markdown b/r.html.markdown index f6a62ae6..b59fc29c 100644 --- a/r.html.markdown +++ b/r.html.markdown @@ -347,7 +347,7 @@ c(6, 8, 7, 5, 3, 0, 9)[3] # 7 which(vec %% 2 == 0) # 1 3 # grab just the first or last few entries in the vector, head(vec, 1) # 8 -tail(vec, w) # 10 11 +tail(vec, 2) # 10 11 # or figure out if a certain value is in the vector any(vec == 10) # TRUE # If an index "goes over" you'll get NA: |