stri_extract_all_boundaries {stringi} | R Documentation |
These functions extract text between specific text boundaries.
stri_extract_all_boundaries(str, simplify = FALSE, omit_no_match = FALSE, ..., opts_brkiter = NULL) stri_extract_last_boundaries(str, ..., opts_brkiter = NULL) stri_extract_first_boundaries(str, ..., opts_brkiter = NULL) stri_extract_all_words(str, simplify = FALSE, omit_no_match = FALSE, locale = NULL) stri_extract_first_words(str, locale = NULL) stri_extract_last_words(str, locale = NULL)
str |
character vector or an object coercible to |
simplify |
single logical value;
if |
omit_no_match |
single logical value; if |
... |
additional settings for |
opts_brkiter |
a named list with ICU BreakIterator's settings
as generated with |
locale |
|
Vectorized over str
.
For more information on the text boundary analysis
performed by ICU's BreakIterator
, see
stringi-search-boundaries.
In case of stri_extract_*_words
,
Just like in stri_count_words
,
ICU's word BreakIterator
iterator is used
to locate word boundaries, and all non-word characters
(UBRK_WORD_NONE
rule status) are ignored.
For stri_extract_all_*
,
if simplify=FALSE
(the default), then a
list of character vectors is returned. Each string consists of
a separate word. In case of omit_no_match=FALSE
and
if there are no words or if a string is missing,
a single NA
is provided on output.
Otherwise, stri_list2matrix
with byrow=TRUE
argument
is called on the resulting object.
In such a case, a character matrix with length(str)
rows
is returned. Note that stri_list2matrix
's fill
argument
is set to an empty string and NA
,
for simplify
equal to TRUE
and NA
, respectively.
For stri_extract_first_*
and stri_extract_last_*
,
a character vector is returned.
A NA
element indicates no match.
Other locale_sensitive: %s!==%
,
%s!=%
, %s<=%
,
%s<%
, %s===%
,
%s==%
, %s>=%
,
%s>%
, %stri!==%
,
%stri!=%
, %stri<=%
,
%stri<%
, %stri===%
,
%stri==%
, %stri>=%
,
%stri>%
; stri_cmp
,
stri_cmp_eq
, stri_cmp_equiv
,
stri_cmp_ge
, stri_cmp_gt
,
stri_cmp_le
, stri_cmp_lt
,
stri_cmp_neq
,
stri_cmp_nequiv
,
stri_compare
;
stri_count_boundaries
,
stri_count_words
;
stri_duplicated
,
stri_duplicated_any
;
stri_enc_detect2
;
stri_locate_all_boundaries
,
stri_locate_all_words
,
stri_locate_first_boundaries
,
stri_locate_first_words
,
stri_locate_last_boundaries
,
stri_locate_last_words
;
stri_opts_collator
;
stri_order
, stri_sort
;
stri_split_boundaries
;
stri_trans_tolower
,
stri_trans_totitle
,
stri_trans_toupper
;
stri_unique
; stri_wrap
;
stringi-locale
;
stringi-search-boundaries
;
stringi-search-coll
Other search_extract: stri_extract
,
stri_extract_all
,
stri_extract_all_charclass
,
stri_extract_all_coll
,
stri_extract_all_fixed
,
stri_extract_all_regex
,
stri_extract_first
,
stri_extract_first_charclass
,
stri_extract_first_coll
,
stri_extract_first_fixed
,
stri_extract_first_regex
,
stri_extract_last
,
stri_extract_last_charclass
,
stri_extract_last_coll
,
stri_extract_last_fixed
,
stri_extract_last_regex
;
stri_match
, stri_match_all
,
stri_match_all_regex
,
stri_match_first
,
stri_match_first_regex
,
stri_match_last
,
stri_match_last_regex
;
stringi-search
Other text_boundaries: stri_count_boundaries
,
stri_count_words
;
stri_locate_all_boundaries
,
stri_locate_all_words
,
stri_locate_first_boundaries
,
stri_locate_first_words
,
stri_locate_last_boundaries
,
stri_locate_last_words
;
stri_opts_brkiter
;
stri_split_boundaries
;
stri_split_lines
,
stri_split_lines1
,
stri_split_lines1
;
stri_trans_tolower
,
stri_trans_totitle
,
stri_trans_toupper
;
stri_wrap
;
stringi-search-boundaries
;
stringi-search
stri_extract_all_words("stringi: THE string processing package 123.48...")