stri_locate_all_boundaries | R Documentation |
These functions locate text boundaries
(like character, word, line, or sentence boundaries).
Use stri_locate_all_*
to locate all the matches.
stri_locate_first_*
and stri_locate_last_*
give the first or the last matches, respectively.
stri_locate_all_boundaries(
str,
omit_no_match = FALSE,
get_length = FALSE,
...,
opts_brkiter = NULL
)
stri_locate_last_boundaries(str, get_length = FALSE, ..., opts_brkiter = NULL)
stri_locate_first_boundaries(str, get_length = FALSE, ..., opts_brkiter = NULL)
stri_locate_all_words(
str,
omit_no_match = FALSE,
locale = NULL,
get_length = FALSE
)
stri_locate_last_words(str, locale = NULL, get_length = FALSE)
stri_locate_first_words(str, locale = NULL, get_length = FALSE)
str |
character vector or an object coercible to |
omit_no_match |
single logical value; if |
get_length |
single logical value; if |
... |
additional settings for |
opts_brkiter |
named list with ICU BreakIterator's settings,
see |
locale |
|
Vectorized over str
.
For more information on text boundary analysis
performed by ICU's BreakIterator
, see
stringi-search-boundaries.
For stri_locate_*_words
,
just like in stri_extract_all_words
and stri_count_words
,
ICU's word BreakIterator
iterator is used
to locate the word boundaries, and all non-word characters
(UBRK_WORD_NONE
rule status) are ignored.
This function is equivalent to a call to
stri_locate_*_boundaries(str, type='word', skip_word_none=TRUE, locale=locale)
stri_locate_all_*
yields a list of length(str)
integer matrices.
stri_locate_first_*
and stri_locate_last_*
generate
return an integer matrix.
See stri_locate
for more details.
Marek Gagolewski and other contributors
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 search_locate:
about_search
,
stri_locate_all()
Other indexing:
stri_locate_all()
,
stri_sub_all()
,
stri_sub()
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_opts_collator()
,
stri_order()
,
stri_rank()
,
stri_sort_key()
,
stri_sort()
,
stri_split_boundaries()
,
stri_trans_tolower()
,
stri_unique()
,
stri_wrap()
Other text_boundaries:
about_search_boundaries
,
about_search
,
stri_count_boundaries()
,
stri_extract_all_boundaries()
,
stri_opts_brkiter()
,
stri_split_boundaries()
,
stri_split_lines()
,
stri_trans_tolower()
,
stri_wrap()
test <- 'The\u00a0above-mentioned features are very useful. Spam, spam, eggs, bacon, and spam.'
stri_locate_all_words(test)
stri_locate_all_boundaries(
'Mr. Jones and Mrs. Brown are very happy. So am I, Prof. Smith.',
type='sentence',
locale='en_US@ss=standard' # ICU >= 56 only
)
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