factonum: Fast converting from factors to numeric/integers

In DavidArenburg/dt.nuggets: Some convinience functions using the data.table package

Description

Fast converting from factors to numeric/integers

Usage

factonum(DT, cols, class = "numeric", removecomma = FALSE)

Arguments

DT	The data.table to operate on
cols	Quoted column names
class	Which class to convert to: integer or numeric?
removecomma	Should remove commas?

Value

The modified data.table with the refactored columns

Examples

set.seed(123)
DT <- data.table(x = factor(sample(10)),
                 y = factor(sample(10) + round(runif(10), 3)),
                 z = factor(paste(sample(10), round(runif(10, 100, 1000), 3), sep = ",")),
                 l = factor(paste(sample(10), round(runif(10, 100, 1000), 3), sep = ",")))
DT
str(DT)
factonum(DT, "x", "integer")
factonum(DT, "y")
factonum(DT, c("z", "l"), removecomma = TRUE)
str(DT)
DT

DavidArenburg/dt.nuggets documentation built on May 6, 2019, 1:54 p.m.