is.unsorted
Test if an Object is Not Sorted
Test if an object is not sorted (in increasing order), without the cost of sorting it.
 Keywords
 univar
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 lengthone 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 to compare x[i]
with x[i1]
for
i
in 2:length(x)
).
Note
This function is designed for objects with onedimensional indices, as described above. Data frames, matrices and other arrays may give surprising results.
See Also
Community examples
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