Add 'tech_type' column to a data.frame
Usage
add_tech_type(x, factors = TRUE, force = TRUE)
Arguments
- x
data.frame that has 'process' column
- factors
logical, if TRUE, the 'tech_type' column will have class
- force
logical, if TRUE will add unknown types of technologies to the factor level, or report the 'unknown types' error if FALSE.
Value
x data.frame with added or overwritten 'tech_type' column.
