char.expand {base} R Documentation

## Expand a String with Respect to a Target Table

### Description

Seeks a unique match of its first argument among the elements of its second. If successful, it returns this element; otherwise, it performs an action specified by the third argument.

### Usage

char.expand(input, target, nomatch = stop("no match"))

### Arguments

 input a character string to be expanded. target a character vector with the values to be matched against. nomatch an R expression to be evaluated in case expansion was not possible.

### Details

This function is particularly useful when abbreviations are allowed in function arguments, and need to be uniquely expanded with respect to a target table of possible values.

### Value

A length-one character vector, one of the elements of target (unless nomatch is changed to be a non-error, when it can be a zero-length character string).

charmatch and pmatch for performing partial string matching.
locPars <- c("mean", "median", "mode")