pastecs (version 1.4.2)

first: Get the first element of a vector

Description

Extract the first element of a vector. Useful for the turnogram() function

Usage

first(x, na.rm=FALSE)

Value

a numerical value

Arguments

x

a numerical vector

na.rm

if na.rm=TRUE, then the first non-missing value (if any) is returned. By default, it is FALSE and the first element (whatever its value) is returned

Author

Philippe Grosjean (), Frédéric Ibanez ()

See Also

last, turnogram

Examples

a <- c(NA, 1, 2, NA, 3, 4, NA)
first(a)
first(a, na.rm=TRUE)