str_extractors: Extract format group strings or numbers

In Tplyr: A Traceability Focused Grammar of Clinical Data Summary

Extract format group strings or numbers

Description

These functions allow you to extract segments of information from within a result string by targetting specific format groups. str_extract_fmt_group() allows you to pull out the individual format group string, while str_extract_num() allows you to pull out that specific numeric result.

Usage

str_extract_fmt_group(string, format_group)

str_extract_num(string, format_group)

Arguments

string	A string of number results from which to extract format groups
format_group	An integer representing format group that should be extracted

Details

Format groups refer to individual segments of a string. For example, given the string ' 5 (34.4%) [9]', there are three separate format groups, which are ' 5', '(34.4%)', and '[9]'.

Value

A character vector

Examples

string <- c(" 0  (0.0%)", " 8  (9.3%)", "78 (90.7%)")

str_extract_fmt_group(string, 2)

str_extract_num(string, 2)

Tplyr documentation built on May 29, 2024, 10:37 a.m.