stri_order: Ordering Permutation¶
Description¶
This function finds a permutation which rearranges the strings in a given character vector into the ascending or descending locale-dependent lexicographic order.
Usage¶
stri_order(str, decreasing = FALSE, na_last = TRUE, ..., opts_collator = NULL)
Arguments¶
|
a character vector |
|
a single logical value; should the sort order be nondecreasing ( |
|
a single logical value; controls the treatment of |
|
additional settings for |
|
a named list with ICU Collator’s options, see stri_opts_collator, |
Details¶
For more information on ICU’s Collator and how to tune it up in stringi, refer to stri_opts_collator.
As usual in 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 (STL’s stable_sort
), which performs up to N*log^2(N) element comparisons, where N is the length of str
.
For ordering with regards to multiple criteria (such as sorting data frames by more than 1 column), see stri_rank.
Value¶
The function yields an integer vector that gives the sort order.
References¶
Collation - ICU User Guide, http://userguide.icu-project.org/collation
See Also¶
Other locale_sensitive: %s<%(), about_locale, about_search_boundaries, about_search_coll, stri_compare(), stri_count_boundaries(), stri_duplicated(), stri_enc_detect2(), stri_extract_all_boundaries(), stri_locate_all_boundaries(), stri_opts_collator(), stri_rank(), stri_sort_key(), stri_sort(), stri_split_boundaries(), stri_trans_tolower(), stri_unique(), stri_wrap()
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)