Return multiple specific vertices from graph.vertex()

graph-tool
1

Is there a way to efficiently return multiple specific vertices? I'm
looking for something between graph.vertex(i) and graph.vertices() in which
I can pass multiple vertex indices and return the corresponding vertex
object. Something like:

    graph.vertices([i,j,...])

Ultimately, these would be needed to pull out the corresponding values from
a PropertyMap on the vertices, so if there's an efficient way to do it that
I'm not thinking of I'd love to hear ideas.

Thanks!

attachment.html (591 Bytes)

2

Probably the simplest thing you can do is access the property map directly
using its array interface:

    idx = numpy.array([13, 43, 22]) # vertices
    prop.a[idx] # corresponding property values

Best,
Tiago