asIntegerDT {R2DT} | R Documentation |
Forcing the integer data type on a selected set of columns of a data.table object
asIntegerDT(inputDT, colNamesToBeTransformed = NULL)
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. |
No value is returned. Note that a valid value needs to be supplied to the 'colNamesToBeTransformed' argument in order to make this function work.
library(data.table) inputDT <- as.data.table(data.frame(x = seq(1, 20, 2), y = LETTERS[1:10])) asFactorDT(inputDT, c('y')) asIntegerDT(inputDT) asIntegerDT(inputDT, c('x', 'y')) # First looking at the result, followed by testing if the transformation worked! inputDT isIntegerDT(inputDT, c('x', 'y')) # Note the following behavior that also holds for the as.integer() base R function. isNumericDT(inputDT, c('x', 'y'))