Re: [igraph] Union, Intersection of two graphs keeping attributes

[Gábor Tóth]

Ok, I will look into it in the next couple of days.

On Fri, May 17, 2013 at 11:01 AM, Tamás Nepusz <address@hidden> wrote:

Dear Gabor,

There is no solution for your problem yet; the R interface contains a function named graph.union.by.name but there is no corresponding function in the Python interface. (The reason is that this is not implemented in C so each higher level layer has to provide its own solution). If you happen to come up with a self-contained function that performs this operation, feel free to put it online somewhere (e.g., gist.github.com) and I will be happy to merge it with the Python interface if it does not require too much extra work to integrate.

Cheers,
Tamas

On 17 May 2013, at 11:57, Gábor Tóth <address@hidden> wrote:

> Dear All,
>
> I would need to see the union and possibly sometimes the intersection of two graphs. I know that the intersection and union functions do not support the keeping of attributes, and that is understandable especially because in the two graphs the union of which I am trying to make, the indices do not correspond. However, each vertex and edge has a unique id, an attribute that I wish to use for the union operation. I started to write a script that iterates through all vertices and edges, gets these unique ids, delete duplicates and then builds a new graph out of it. I am wondering if there is any other solution for this.
>
> Thanks,
>
> Gabor

> _______________________________________________
> igraph-help mailing list
> address@hidden
> https://lists.nongnu.org/mailman/listinfo/igraph-help


_______________________________________________
igraph-help mailing list
address@hidden
https://lists.nongnu.org/mailman/listinfo/igraph-help