| isAcyclic {ggm} | R Documentation |
Checks if a given graph is acyclic.
isAcyclic(amat)
amat |
a square Boolean matrix with dimnames, the adjacency matrix of a graph. |
a logical value, TRUE if the graph is acyclic and FALSE
otherwise.
Giovanni M. Marchetti
Aho, A.V., Hopcroft, J.E. & Ullman, J.D. (1983). Data structures and algorithms. Reading: Addison-Wesley.
## A cyclic graph
d <- matrix(0,3,3)
rownames(d) <- colnames(d) <- c("x", "y", "z")
d["x","y"] <- d["y", "z"] <- d["z", "x"] <- 1
## Test if the graph is acyclic
isAcyclic(d)