abind (version 1.4-5)

acorn: Return a corner of an array object (like head)

Description

Return a small corner of an array object, like head() or tail() but taking only a few slices on each dimension.

Usage

acorn(x, n=6, m=5, r=1, ...)

Arguments

x
An array (including a matrix or a data frame)
n,m,r
Numbers of items on each dimension. A negative number is interpreted as this many items at the end (like tail).
...
Further arguments specifying numbers of slices to return on each dimension.

Value

An object like x with fewer elements on each dimension.

Details

Like head() for multidimensional arrays, with two differences: (1) returns just a few items on each dimension, and (2) negative numbers are treated like tail().

Examples

Run this code
x <- array(1:24,dim=c(4,3,2),dimnames=rev(list(letters[1:2],LETTERS[1:3],letters[23:26])))
acorn(x)
acorn(x, 3)
acorn(x, -3)
acorn(x, 3, -2)

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