stri_order | R Documentation |
This function finds a permutation which rearranges the strings in a given character vector into the ascending or descending locale-dependent lexicographic order.
stri_order(str, decreasing = FALSE, na_last = TRUE, ..., opts_collator = NULL)
str |
a character vector |
decreasing |
a single logical value; should the sort order
be nondecreasing ( |
na_last |
a single logical value; controls the treatment of |
... |
additional settings for |
opts_collator |
a named list with ICU Collator's options,
see |
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
.
The function yields an integer vector that gives the sort order.
Marek Gagolewski and other contributors
Collation - ICU User Guide, https://unicode-org.github.io/icu/userguide/collation/
The official online manual of stringi at https://stringi.gagolewski.com/
Gagolewski M., stringi: Fast and portable character string processing in R, Journal of Statistical Software 103(2), 2022, 1-59, \Sexpr[results=rd]{tools:::Rd_expr_doi("10.18637/jss.v103.i02")}
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()
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)) # lexicographic order
stri_order(c(1, 100, 2, 101, 11, 10), numeric=TRUE) # OK for integers
stri_order(c(0.25, 0.5, 1, -1, -2, -3), numeric=TRUE) # incorrect
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