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igraph data structure versions

Source: R/versions.R
graph_version.Rd

igraph's internal data representation changes sometimes between versions. This means that it is not always possible to use igraph objects that were created (and possibly saved to a file) with an older igraph version.

Usage

graph_version(graph)

Arguments

graph

The input graph. If it is missing, then the version number of the current data format is returned.

Value

An integer scalar.

Details

graph_version() queries the current data format, or the data format of a possibly older igraph graph.

upgrade_graph() can convert an older data format to the current one.

See also

upgrade_graph to convert the data format of a graph.

Other versions: upgrade_graph()