Skip to contents

Load a graph from the graph database for testing graph isomorphism.

Source: R/foreign.R
graph.graphdb.Rd

[Deprecated]

graph.graphdb() was renamed to graph_from_graphdb() to create a more consistent API.

Usage

graph.graphdb(
  url = NULL,
  prefix = "iso",
  type = "r001",
  nodes = NULL,
  pair = "A",
  which = 0,
  base = "http://cneurocvs.rmki.kfki.hu/graphdb/gzip",
  compressed = TRUE,
  directed = TRUE
)

Arguments

url

If not NULL it is a complete URL with the file to import.

prefix

Gives the prefix. See details below. Possible values: iso, i2, si4, si6, mcs10, mcs30, mcs50, mcs70, mcs90.

type

Gives the graph type identifier. See details below. Possible values: r001, r005, r01, r02, m2D, m2Dr2, m2Dr4, m2Dr6 m3D, m3Dr2, m3Dr4, m3Dr6, m4D, m4Dr2, m4Dr4, m4Dr6, b03, b03m, b06, b06m, b09, b09m.

nodes

The number of vertices in the graph.

pair

Specifies which graph of the pair to read. Possible values: A and B.

which

Gives the number of the graph to read. For every graph type there are a number of actual graphs in the database. This argument specifies which one to read.

base

The base address of the database. See details below.

compressed

Logical constant, if TRUE than the file is expected to be compressed by gzip. If url is NULL then a ‘.gz’ suffix is added to the filename.

directed

Logical constant, whether to create a directed graph.

read_graph_graphdb()