This help topic is for R version 2.9.0. For the current version of R, try https://stat.ethz.ch/R-manual/R-patched/library/base/html/is.unsorted.html
is.unsorted {base}R Documentation

Test if an Object is Not Sorted

Description

Test if an object is not sorted, without the cost of sorting it.

Usage

is.unsorted(x, na.rm = FALSE, strictly = FALSE)

Arguments

x

an R object with a class or a numeric, complex, character or logical vector.

na.rm

logical. Should missing values be removed before checking?

strictly

logical indicating if the check should be for strictly increasing values.

Value

A length-one logical value. All objects of length 0 or 1 are sorted: the result will be NA for objects of length 2 or more except for atomic vectors and objects with a class (where the >= or > method is used).

See Also

sort, order.


[Package base version 2.9.0 ]