asLogicalDT {R2DT}

Forcing the logical/boolean data type on a selected set of columns of a data.table object

Description

Forcing the logical/boolean data type on a selected set of columns of a data.table object

Usage

asLogicalDT(inputDT, colNamesToBeTransformed = NULL)

Arguments

inputDT

data.table object containing the data of interest. This is an obligatory argument, without default value.

colNamesToBeTransformed

Character vector containing potential column names of the 'inputDT' argument. The default value is NULL.

Value

No value is returned. Note that a valid value needs to be supplied to the 'colNamesToBeTransformed' argument in order to make this function work.

Examples

library(data.table)
inputDT <- as.data.table(data.frame(x = seq(1, 20, 2), y = LETTERS[1:10]))
asFactorDT(inputDT, c('y'))

asLogicalDT(inputDT)
asLogicalDT(inputDT, c('x', 'y'))

# First looking at the result, followed by testing if the transformation worked!

inputDT
isLogicalDT(inputDT, c('x', 'y'))

# Notice the 'funny' side effect for the 'F' character value of column y...
# This behavior is also observed for the as.logical() base R function.