create a new vector in for cycle r code example
Example 1: r create a vector
# Basic syntax:
c(11, 23, 42) # Vector of numerics
c(TRUE, FALSE, TRUE) # Vector of booleans/logicals
c("aa", "bb", "cc") # Vector of strings
# Note, in R, list and vectors (aka atomic vectors) are both
# one-dimensional objects, but lists can contain mixed type data
# whereas vectors can only contain one type of data
# Note, to make a list, use: list(11, 23, 42)
Example 2: apply on a vector in r
lapply returns a list of the same length as X, each element of which is the result of applying FUN to the corresponding element of X.
sapply is a “user-friendly” version of lapply by default returning a vector or matrix if appropriate.
replicate is a wrapper for the common use of sapply for repeated evaluation of an expression (which will usually involve random number generation).
Usage
lapply(X, FUN, ...)
sapply(X, FUN, ..., simplify = TRUE, USE.NAMES = TRUE)
replicate(n, expr, simplify = TRUE)