Critical Path Analysis (CPA) Demo
This demo shows how to perform critical path analysis (CPA) in project management with
yFiles. Formally, this means identifying the tasks of a project that must be completed on
time so that the whole project can be completed on time.
This example demonstrates the process of building a house. Each node represents a task
that has to be completed and is associated with a time duration written on its label. The
width of each node is also proportional to the required task duration.
An edge connecting two tasks means that the task of its source node has to be completed
before the task of its target node and is associated with a transition time duration (see
the corresponding edge label) which represents the time needed to proceed from the source
task to the target task.
edges are the edges that belong to the critical path. The
edges connect tasks that should be completed on time otherwise, the whole project will be
delayed, while the
ones have slack greater than zero, which means that they can be delayed without affecting
the completion time of the project.
For the critical path calculation, we apply the
and we assign to each node a number that represents its rank and to each edge a number
that represents its slack. Afterwards, we calculate the shortest path between the
first/last ranked nodes while taking into consideration the slack values of each edge,
i.e. the paths with higher slack are longer. At the end, we apply a
such that nodes are placed in layers based on their ranking, while the edges that belong
to the critical path gain priority so that the corresponding nodes incident to them are