patternapply

countPatternMatches.Rd (888B)

---

 % Generated by roxygen2: do not edit by hand
 % Please edit documentation in R/countPatternMatches.R
 \name{countPatternMatches}
 \alias{countPatternMatches}
 \title{Count how many matches are generated by each pattern.}
 \usage{
 countPatternMatches(X, patterns)
 }
 \arguments{
 \item{X}{A character vector where matches are sought.}
 
 \item{patterns}{A vector of regular expression patterns.}
 }
 \value{
 A integer vector of same length as \code{patterns} with a count of 
   matches.
 }
 \description{
 Count how many matches are generated by each pattern.
 }
 \details{
 This is meant to be useful when developing a vector of regexes to 
   apply to text. Unlike \code{patternappy()}, which only finds the first 
   regex that matches each element of text, a text element here can match 
   multiple regexes. Therefore, the sum of the returned vector may not equal 
   the length of the input \code{X}.
 }