Convert Identifiers with Custom Database

Convert Identifiers with Custom Database

Usage

convert_custom(x, from = NULL, to = NULL, dt = NULL, multiple = FALSE)

Arguments

x

A character vector to convert.

from

Which identifier type to be converted.

to

Identifier type convert to.

dt

A data.frame as database for conversion.

multiple

if TRUE, return a data.table instead of a string vector, so multiple identifier mappings can be kept.

Value

A character vector.

Examples

dt <- data.table::data.table(UpperCase = LETTERS[1:5], LowerCase = letters[1:5])
dt
#>    UpperCase LowerCase
#>       <char>    <char>
#> 1:         A         a
#> 2:         B         b
#> 3:         C         c
#> 4:         D         d
#> 5:         E         e
x <- convert_custom(c("B", "C", "E", "E", "FF"), from = "UpperCase", to = "LowerCase", dt = dt)
x
#> [1] "b" "c" "e" "e" NA