graphvizVersion: A function to determine graphviz library version
In Rgraphviz: Provides plotting capabilities for R graph objects

Description Usage Value Author(s) Examples

This function will query the graphviz libraries that the package was built against and report what version of Graphviz is being used.

1	graphvizVersion()

A list with three elements, two of class numeric_version. The first element named installed_version represents the version of Graphviz that is being used by the package. The second element named build_version represents the version of Graphviz that was used to build the package. A mismatch between these two versions may indicate problems. The third element is a logical named bundled_graphviz and indicates if Rgraphviz is using the bundled Graphviz (default) or an external Graphviz.

Jeff Gentry, modified by Kasper Daniel Hansen