simplify_requisites: Convert requisites to original notation
Description
This function takes in either the pre or corequisites of a plan of study as a vector, then
removes any additional information like OR relationships and minimum grades such that the
network can be analyzed using the traditional functions.
Usage
simplify_requisites(requisites)
Value
vector object - A simplified vector describing the pre and corequisites (as strings)
Arguments
- requisites
vector object - A vector describing the pre and corequisites (as strings)