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These functions determine the number of text boundaries (like character, word, line, or sentence boundaries) in a string.
stri_count_boundaries(str, ..., opts_brkiter = NULL)stri_count_words(str, locale = NULL)
character vector or an object coercible to
additional settings for opts_brkiter
a named list with ICU BreakIterator's settings,
see stri_opts_brkiter;
NULL for the default break iterator, i.e., line_break
NULL or "" for text boundary analysis following
the conventions of the default locale, or a single string with
locale identifier, see stringi-locale
Both functions return an integer vector.
Vectorized over str.
For more information on text boundary analysis
performed by ICU's BreakIterator, see
stringi-search-boundaries.
In case of stri_count_words,
just like in stri_extract_all_words and
stri_locate_all_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_count_boundaries(str, type="word", skip_word_none=TRUE, locale=locale).
Note that a BreakIterator of type character
may be used to count the number of Unicode characters in a string.
The stri_length function,
which aims to count the number of Unicode code points,
might report different results.
Moreover, a BreakIterator of type sentence
may be used to count the number of sentences in a text piece.
Other search_count: stri_count,
stringi-search
Other locale_sensitive: %s<%,
stri_compare,
stri_duplicated,
stri_enc_detect2,
stri_extract_all_boundaries,
stri_locate_all_boundaries,
stri_opts_collator,
stri_order, stri_sort,
stri_split_boundaries,
stri_trans_tolower,
stri_unique, stri_wrap,
stringi-locale,
stringi-search-boundaries,
stringi-search-coll
Other text_boundaries: stri_extract_all_boundaries,
stri_locate_all_boundaries,
stri_opts_brkiter,
stri_split_boundaries,
stri_split_lines,
stri_trans_tolower,
stri_wrap,
stringi-search-boundaries,
stringi-search
# NOT RUN {
test <- "The\u00a0above-mentioned features are very useful. Kudos to their developers."
stri_count_boundaries(test, type="word")
stri_count_boundaries(test, type="sentence")
stri_count_boundaries(test, type="character")
stri_count_words(test)
test2 <- stri_trans_nfkd("\u03c0\u0153\u0119\u00a9\u00df\u2190\u2193\u2192")
stri_count_boundaries(test2, type="character")
stri_length(test2)
stri_numbytes(test2)
# }
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