first {pastecs}

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)

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

Value

a numerical value

Author(s)

Philippe Grosjean ([e-mail]), Frédéric Ibanez ([e-mail])

See Also

last, turnogram

Examples

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