order_by: Order a factor by the levels of another variable.
In mhairi/ordered: Ordering Factors Made Easy

Description Usage Arguments Details Value Examples

View source: R/order_by.R

The factor and the order must be of the same length and each value of factor must correspond with one value of order.

1	order_by(factor, order, desc = FALSE)

`factor`	A factor or character vector.
`order`	A numeric variable (or coercible to numeric).
`desc`	Set to TRUE to order descending.

This is useful when you have unique values of factor and numeric, but can be useful in other circumstances when another variable corresponds to the ordering of the factor.

Ties are arbitrarily ordered for unique factors.

An ordered factor.

# Ordering a factor where the values are unique
order_by(letters[1:3], 1:3)

# Ordering a factor by a variable that provides the levels
order_by(c('a', 'a', 'b'), c(1, 1, 2))