In the mathematical subfield of graph theory a level structure of an undirected graph is a partition of the vertices into subsets that have the same distance from a given root vertex.

What is level in Aba graphs?

The level of a graph is the point on the y-axis “around which a set of behavioral measures converge” (Cooper, Heron, and Heward, 2007).

How do you describe a level curve?

Level curves A level curve is simply a cross section of the graph of z=f(x,y) taken at a constant value, say z=c. A function has many level curves, as one obtains a different level curve for each value of c in the range of f(x,y).