Reading and writing files

Graphs.jl includes functions for working with graphs stored in various file formats/

Index

Full docs

Graphs.loadgraphMethod
loadgraph(file, gname="graph", format=LGFormat())

Read a graph named gname from file in the format format.

Implementation Notes

gname is graph-format dependent and is only used if the file contains multiple graphs; if the file format does not support multiple graphs, this value is ignored. The default value may change in the future.

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Graphs.loadgraphsMethod
loadgraphs(file, format=LGFormat())

Load multiple graphs from file in the format format. Return a dictionary mapping graph name to graph.

Implementation Notes

For unnamed graphs the default name "graph" will be used. This default may change in the future.

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Graphs.savegraphMethod
savegraph(file, g, gname="graph", format=LGFormat)

Saves a graph g with name gname to file in the format format. Return the number of graphs written.

Implementation Notes

The default graph name assigned to gname may change in the future.

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Graphs.savegraphMethod
savegraph(file, d, format=LGFormat())

Save a dictionary d of graphname => graph to file in the format format. Return the number of graphs written.

Examples

julia> using Graphs

julia> g1 = SimpleGraph(5,8)
{5, 8} undirected simple Int64 graph

julia> g2 = SimpleGraph(7,10)
{7, 10} undirected simple Int64 graph

julia> d = Dict("graph_1" => g1, "graph_2" => g2);

julia> savegraph("myfile.txt", d, LGFormat())
2

Implementation Notes

Will only work if the file format supports multiple graph types.

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Graphs.savelgMethod
savelg(io, g, gname)

Write a graph g with name gname in a proprietary format to the IO stream designated by io. Return 1 (number of graphs written).

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Graphs.savelg_multMethod
savelg_mult(io, graphs)

Write a dictionary of (name=>graph) to an IO stream io, with default GZip compression. Return number of graphs written.

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