Re: [igraph] RuntimeWarning when reading GraphML

[Tamas Nepusz]

> 1) Whether to read the <node id="n3"> type of ids from the graph, or
> not. It they are not read, then we might lose some information. If
> they are read, that could lead to confusion.
I think we should read them anyway, but renaming the auto-generated  
"id" attribute to "GraphML:id" seems a good idea; chances are that  
some of our users will use the "id" attribute for other purposes, but  
it's unlikely with "GraphML:id".

> 2) Whether to use the "id" (igraph) vertex attribute as <node id="n3">
> type of ids, when we write out a GraphML file. Perhaps not.
I agree; in general, nothing guarantees that the "id" attributes are  
unique and although igraph will happily save the graph as GraphML in  
this case, it won't be able to read it back.

--
Tamas