Return a corner of an array object (like head)
Return a small corner of an array object, like head() or tail() but
taking only a few slices on each dimension.
acorn(x, n=6, m=5, r=1, ...)
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. |
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().
An object like x with fewer elements on each dimension.
Tony Plate tplate@acm.org
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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