Returns the appropriate abbreviation in English for an ordinal number
(for example ordinal(5) is "5th").
Usage
ordinal(k)
ordinalsuffix(k)
Arguments
k
An integer or vector of integers.
Value
A character string or character vector of the same length as k.
Details
ordinal(k) returns a character string representing the
kth ordinal number. ordinalsuffix(k) determines the
appropriate suffix.
The suffix can be either "st" (abbreviating
first), "nd" (abbreviating second),
"rd" (abbreviating third) or
"th" (for all other ordinal numbers fourth,
fifth, etc).