diff options
| -rw-r--r-- | r.html.markdown | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/r.html.markdown b/r.html.markdown index 9b8420fe..2746d1eb 100644 --- a/r.html.markdown +++ b/r.html.markdown @@ -213,10 +213,10 @@ c(1, 2, 3, 1, 2, 3) * c(1, 2, 1, 2, 1, 2) # 1 4 3 2 2 6 # There's no difference between strings and characters in R "Horatio" # "Horatio" class("Horatio") # "character" -class('H') # "character" +class("H") # "character" # Those were both character vectors of length 1 # Here is a longer one: -c('alef', 'bet', 'gimmel', 'dalet', 'he') +c("alef", "bet", "gimmel", "dalet", "he") # => "alef" "bet" "gimmel" "dalet" "he" length(c("Call","me","Ishmael")) # 3 # You can do regex operations on character vectors: @@ -252,8 +252,8 @@ c(TRUE, FALSE, TRUE) & c(FALSE, TRUE, TRUE) # FALSE FALSE TRUE # You can test if x is TRUE isTRUE(TRUE) # TRUE # Here we get a logical vector with many elements: -c('Z', 'o', 'r', 'r', 'o') == "Zorro" # FALSE FALSE FALSE FALSE FALSE -c('Z', 'o', 'r', 'r', 'o') == "Z" # TRUE FALSE FALSE FALSE FALSE +c("Z", "o", "r", "r", "o") == "Zorro" # FALSE FALSE FALSE FALSE FALSE +c("Z", "o", "r", "r", "o") == "Z" # TRUE FALSE FALSE FALSE FALSE # FACTORS # The factor class is for categorical data |