first {pastecs} | R Documentation

## 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 (phgrosjean@sciviews.org), Frédéric Ibanez (ibanez@obs-vlfr.fr)

### See Also

`last`, `turnogram`

### Examples

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

[Package pastecs version 1.3-4 Index]