Functions to turn datatime into vars table

[trinker]

PowerBI can take a date and turn it into month, quarter, weekday as a plot ont he fly. It'd be nice to be able to have a quick way to generate all of these forms for plotting purposes.

Potential Functions

date_vars <- function(x, ...){
    UseMethod('date_vars')
}


time_vars <- function(x, ...){
    UseMethod('time_vars')
}

date_time_vars <- function(x, ...){
    UseMethod('time_vars')
}

Potential methods

works on a valid date time class only

type = returns

atomic = data frame [date/time + vars]
data.frame = old data frame + vars

Potential Vars

date: month (factor), year (integer), day of week (factor), quarter (factor), day type ('weekend', 'weekday')
time: hour (integer: 12), hour2 (integer: 24), hour3 (factor| hour + am/pm), hour type ('am', 'pm'),