2

I'm using python package graph-tool, and facing an error trying to internalize boolean PropertyMap, the way described at http://graph-tool.skewed.de/static/doc/quickstart.html#graph-views. Here is an example code:

from graph_tool.all import *

g = price_network(500)
filtered = g.new_vertex_property("bool")
for v in g.vertices(): 
    filtered[v] = True

g.properties["filtered"] = filtered

The last line produces a

TypeError: value for 't' must be one of: v, e, g

Anyone knows how to put it right?

kurtosis
  • 1,365
  • 2
  • 12
  • 27

1 Answers1

4

As it is described in the documentation, you should use the vertex_properties attribute:

g.vertex_properties["filtered"] = filtered

or equivalently:

g.vp["filtered"] = filtered

If you want to use the properties attribute directly, you have to pass the key type as well:

g.properties[('v', "filtered")] = filtered

This is because different types of property maps (e.g. vertex or edge) can have the same name. This is all covered here.

Tiago Peixoto
  • 5,149
  • 2
  • 28
  • 28