erdos.renyi.game
Generate random graphs according to the Erdos-Renyi model
This model is very simple, every possible edge is created with the same constant probability.
- Keywords
- graphs
Usage
erdos.renyi.game(
n,
p.or.m,
type = c("gnp", "gnm"),
directed = FALSE,
loops = FALSE,
...
)Arguments
- n
The number of vertices in the graph.
- p.or.m
Either the probability for drawing an edge between two arbitrary vertices (G(n,p) graph), or the number of edges in the graph (for G(n,m) graphs).
- type
The type of the random graph to create, either
gnp(G(n,p) graph) orgnm(G(n,m) graph).- directed
Logical, whether the graph will be directed, defaults to FALSE.
- loops
Logical, whether to add loop edges, defaults to FALSE.
- …
Additional arguments, ignored.
Details
In G(n,p) graphs, the graph has ‘n’ vertices and for each edge the probability that it is present in the graph is ‘p’.
In G(n,m) graphs, the graph has ‘n’ vertices and ‘m’ edges,
and the ‘m’ edges are chosen uniformly randomly from the set of all
possible edges. This set includes loop edges as well if the loops
parameter is TRUE.
random.graph.game is an alias to this function.
Value
A graph object.
Deprecated
Since igraph version 0.8.0, both erdos.renyi.game and
random.graph.game are deprecated, and sample_gnp and
sample_gnm should be used instead.
References
Erdos, P. and Renyi, A., On random graphs, Publicationes Mathematicae 6, 290--297 (1959).
See Also
Examples
# NOT RUN {
g <- erdos.renyi.game(1000, 1/1000)
degree_distribution(g)
# }