potential_match: Find potential matches for a vector against another

In NRGI/nrgiR: Use R at NRGI

Find potential matches for a vector against another

Description

Given a vector, find potential matches for each item against another vector. Items can also be grouped to check only against items in the same grouping.

Usage

potential_match(vec1, group1=NULL, vec2, group2=NULL, fancy=FALSE, agrep_value=.3, adist_value=1)

Arguments

vec1	character vector.
group1	character vector, of the same length as vec1.
vec2	character vector.
group2	character vector, of the same length as vec2.
fancy	if TRUE, use agrep to determine approximate matches. If FALSE, use adist to determine approximate matches.
agrep_value	max.distance argument to agrep. Used when fancy==FALSE. See agrep.
adist_value	Maximum Levenshtein distance between strings allowed for results. Higher values allows for less similar strings to be returned as potential matches. Used when fancy==TRUE. See adist.

Value

A data.table. The first two columns are the group (if applicable) and original character strings matched from vec1. Columns three through eight contain up to six potential matches for the group/string pair in columns one and two. Where fewer than six potential matches are found, the rightmost columns will contain NA.

Examples

potential_match(vec1=c("abc", "pigglywiggly"), vec2=c("abc", "rtyert", "piggly"), fancy=TRUE)

NRGI/nrgiR documentation built on April 3, 2022, 9:20 a.m.