Numbers
a <- 3
Strings
a <- "hello"
b <- c("hello","there")
Factors
summary(tree$CHBR) A1 A2 A3 A4 A5 A6 A7 B1 B2 B3 B4 B5 B6 B7 C1 C2 C3 C4 C5 C6 3 1 1 3 1 3 1 1 3 3 3 3 3 3 1 3 1 3 1 1 C7 CL6 CL7 D1 D2 D3 D4 D5 D6 D7 1 1 1 1 1 3 1 1 1 1
Logical
a = TRUE typeof(a) [1] "logical" b = FALSE typeof(b) [1] "logical"