headtail: Return the first and last parts of an object

In acidgenomics/AcidBase: Acid Genomics Base Functions

Return the first and last parts of an object

Description

Applies to both rows and columns, enabling quick inspection during interactive use.

Usage

headtail(x, ...)

## S4 method for signature 'data.frame'
headtail(x, n = 2L)

## S4 method for signature 'list'
headtail(x, n = 2L)

## S4 method for signature 'matrix'
headtail(x, n = 2L)

## S4 method for signature 'vector'
headtail(x, n = 2L)

Arguments

x	Object.
n	integer(1). Positive integer denoting the number of first and last items to include.
...	Additional arguments.

Details

Inspired by the print() method for DataFrame class objects.

Value

Invisible NULL.

Functions

• headtail(data.frame): Same method as matrix.

• headtail(list): Paste collapse to a character(1).

• headtail(matrix): Show first and last rows.

Note

Updated 2021-10-14.

See Also

• utils::head(), utils::tail().

• cat().

Examples

data(mtcars, package = "datasets")

## data.frame ====
headtail(mtcars)

acidgenomics/AcidBase documentation built on Feb. 9, 2023, 10:17 p.m.