R: igraph data structure versions

graph_version {igraph} | R Documentation

## igraph data structure versions

### Description

igraph's internal data representation changes sometimes between versions. This means that it is not 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.

### 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.

### Value

A character scalar.

### See Also

upgrade_graph to convert the data format of a graph.

[Package igraph version 1.3.2 Index]