find_inbound_courses: Find all possible prerequisites to a course
Description
This function takes in a plan of study and a course, then finds all the courses it is related to
through its prerequisites
Usage
find_inbound_courses(plan_of_study, course)
Value
An atomic vector of vertex ids for the course's prerequisites
Arguments
- plan_of_study
An igraph object created using the create_plan_of_study function
- course
The course to find all relevant prerequisites of