str_group_extract {dsmisc} | R Documentation |
Extract Regular Expression Groups
Description
Extract Regular Expression Groups
Usage
str_group_extract(string, pattern, group = NULL, nas = TRUE)
Arguments
string |
string to extract from |
pattern |
pattern with groups to match |
group |
groups to extract |
nas |
return NA values (TRUE) or filter them out (FALSE) |
Value
string vector or string matrix
Examples
strings <- paste(LETTERS, seq_along(LETTERS), sep = "_")
str_group_extract(strings, "([\\w])_(\\d+)")
str_group_extract(strings, "([\\w])_(\\d+)", 1)
str_group_extract(strings, "([\\w])_(\\d+)", 2)
[Package dsmisc version 0.3.3 Index]