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% Generated by roxygen2: do not edit by hand
% Please edit documentation in R/sort.R
\name{stri_order}
\alias{stri_order}
\title{Ordering Permutation}
\usage{
stri_order(str, decreasing = FALSE, na_last = TRUE, ..., opts_collator = NULL)
}
\arguments{
\item{str}{a character vector}
\item{decreasing}{a single logical value; should the sort order
be nondecreasing (\code{FALSE}, default)
or nonincreasing (\code{TRUE})?}
\item{na_last}{a single logical value; controls the treatment of \code{NA}s
in \code{str}. If \code{TRUE}, then missing values in \code{str} are put
at the end; if \code{FALSE}, they are put at the beginning;
if \code{NA}, then they are removed from the output}
\item{...}{additional settings for \code{opts_collator}}
\item{opts_collator}{a named list with \pkg{ICU} Collator's options,
see \code{\link{stri_opts_collator}}, \code{NULL}
for default collation options}
}
\value{
The function yields an integer vector that gives the sort order.
}
\description{
This function finds a permutation which rearranges the
strings in a given character vector into the ascending or descending
locale-dependent lexicographic order.
}
\details{
For more information on \pkg{ICU}'s Collator and how to tune it up
in \pkg{stringi}, refer to \code{\link{stri_opts_collator}}.
As usual in \pkg{stringi}, non-character inputs are coerced to strings,
see an example below for a somewhat non-intuitive behavior of lexicographic
sorting on numeric inputs.
This function uses a stable sort algorithm (\pkg{STL}'s \code{stable_sort}),
which performs up to \eqn{N*log^2(N)} element comparisons,
where \eqn{N} is the length of \code{str}.
For ordering with regards to multiple criteria (such as sorting
data frames by more than 1 column), see \code{\link{stri_rank}}.
}
\examples{
stri_order(c('hladny', 'chladny'), locale='pl_PL')
stri_order(c('hladny', 'chladny'), locale='sk_SK')
stri_order(c(1, 100, 2, 101, 11, 10))
stri_order(c(1, 100, 2, 101, 11, 10), numeric=TRUE)
}
\references{
\emph{Collation} - ICU User Guide,
\url{https://unicode-org.github.io/icu/userguide/collation/}
}
\seealso{
The official online manual of \pkg{stringi} at \url{https://stringi.gagolewski.com/}
Gagolewski M., \pkg{stringi}: Fast and portable character string processing in R, \emph{Journal of Statistical Software} 103(2), 2022, 1-59, \doi{10.18637/jss.v103.i02}
Other locale_sensitive:
\code{\link{\%s<\%}()},
\code{\link{about_locale}},
\code{\link{about_search_boundaries}},
\code{\link{about_search_coll}},
\code{\link{stri_compare}()},
\code{\link{stri_count_boundaries}()},
\code{\link{stri_duplicated}()},
\code{\link{stri_enc_detect2}()},
\code{\link{stri_extract_all_boundaries}()},
\code{\link{stri_locate_all_boundaries}()},
\code{\link{stri_opts_collator}()},
\code{\link{stri_rank}()},
\code{\link{stri_sort_key}()},
\code{\link{stri_sort}()},
\code{\link{stri_split_boundaries}()},
\code{\link{stri_trans_tolower}()},
\code{\link{stri_unique}()},
\code{\link{stri_wrap}()}
}
\concept{locale_sensitive}
\author{
\href{https://www.gagolewski.com/}{Marek Gagolewski} and other contributors
}
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