igraph: write_graph – R documentation

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write_graph

Writing the graph to a file in some format

Description

write_graph is a general function for exporting graphs to foreign file formats, however not many formats are implemented right now.

Usage

write_graph(
  graph,
  file,
  format = c("edgelist", "pajek", "ncol", "lgl", "graphml", "dimacs", "gml", "dot",
    "leda"),
  ...
)

Arguments

`graph`	The graph to export.
`file`	A connection or a string giving the file name to write the graph to.
`format`	Character string giving the file format. Right now `pajek`, `graphml`, `dot`, `gml`, `edgelist`, `lgl`, `ncol` and `dimacs` are implemented. As of igraph 0.4 this argument is case insensitive.
`...`	Other, format specific arguments, see below.

Value

A NULL, invisibly.

Edge list format

The edgelist format is a simple text file, with one edge in a line, the two vertex ids separated by a space character. The file is sorted by the first and the second column. This format has no additional arguments.

Author(s)

Gabor Csardi csardi.gabor@gmail.com

References

Adai AT, Date SV, Wieland S, Marcotte EM. LGL: creating a map of protein function with an algorithm for visualizing very large biological networks. J Mol Biol. 2004 Jun 25;340(1):179-90.

Examples

g <- make_ring(10)
## Not run: write_graph(g, "/tmp/g.txt", "edgelist")

igraph

Network Analysis and Visualization

v1.2.10

GPL (>= 2)

Authors

See AUTHORS file.

Initial release