match_rows: Row matcher

In radbrt/rowpatternmatcher: Select rows based on pattern

Description

This function accepts a dataframe, regex-pattern and column name for definitions, and return matching rows

Usage

match_rows(df, definitions, rx, match_name = NULL, wildcards = NULL,
  keep_all_rows = FALSE)

Arguments

df	Sorted and grouped dataframe to filter
definitions	Column containing the definition of rows
rx	Simple regex-like statement to filter for - quoted.
match_name	Optional column name for match-number. Defaults to NULL, meaning no column will be created.
wildcards	keywords (nicknames) in your pattern ('rx') that should match any rows
keep_all_rows	Boolean allows you to return all rows, uncluding nonmatching rows. Meaninless if match_name is not set. Default FALSE.

Examples

## Not run: 
match_rows(msft, change, "UP{4,} DOWN{3,}", match_name=mnum)

## End(Not run)

radbrt/rowpatternmatcher documentation built on Nov. 5, 2019, 2:07 a.m.