Is there an efficient way to read a GraphML file and produce a MetaGraph?

[ArtHarg]

Is there an efficient way to read a GraphML file and produce a MetaGraph?

My use case: I have a file with vertices and edges, all with metadata. I can succesfully read the graph using

g = loadgraph(“calcGraph.graphml”,“graph”, GraphMLFormat())

but that ignores the key and data nodes. MetaGraphNext.jl doesn’t seem to have a function to read GraphML files.

Is there a way to read the GraphML, apart from using EzXML to read the GraphML file and building the MetaGraph myself? If not, what would be the most efficient and/or most Julian way to approach this?

[filchristou]

Hi. To my knowledge there is nothing for MetaGraphsNext.jl. However if you want to read in a MetaGraphs.jl, you can use https://github.com/UniStuttgart-IKR/NestedGraphsIO.jl. NestedGraphsIO.jl can read both NestedGraphs and MetaGraphs.MetaGraph from GraphML. However it's not registered because a PR at GraphsIO.jl is pending.

[filchristou]

right now the whole GraphsIO.jl thing is a bit of a mess. With julia v1.9 and package extensions things will improve noticeably.