Dear Tiago,

I used G.purge_vertices(in_place=True). But the vertex filter didn't work.

G.set_vertex_filter(prop=exist)
G.purge_vertices(in_place=True)

gt.graph_draw(G, pos=pos)
# step 1 largest component in network A
UA = gt.GraphView(G, vfilt=v_type)

line 45:LCA = gt.label_largest_component(UA)
exist.a = False
for v in G.vertices():
    if LCA[v]:
        exist[v] = True
        for n in v.all_neighbours():
            if not v_type[n]:
                exist[v] = True

G.set_vertex_filter(exist)
G.purge_vertices(in_place=True)

Console warns that,
Traceback (most recent call last):
  File "/home/lockheed/PycharmProjects/cascade_failures/MAIN.py", line 45, in <module>
    LCA = gt.label_largest_component(UA)
  File "/usr/lib/python2.7/dist-packages/graph_tool/topology/__init__.py", line 814, in label_largest_component
    label.a = (c.a == h.argmax()) & (vfilt.a ^ inv)
ValueError: operands could not be broadcast together with shapes (248) (256) 

Thanks for your help!

Best,
Liu

在 2014年4月29日星期二UTC+8下午11时13分06秒,Tiago Peixoto写道:
On 04/29/2014 03:52 PM, Liu wrote:
> Traceback (most recent call last):
>   File "/home/lockheed/PycharmProjects/cascade_failures/MAIN.py", line 56, in <module>
>     G.purge_vertices()
>   File "/usr/lib/python2.7/dist-packages/graph_tool/__init__.py", line 1867, in purge_vertices
>     new_g = Graph(self, prune=(True, False, False))
>   File "/usr/lib/python2.7/dist-packages/graph_tool/__init__.py", line 1133, in __init__
>     _prop("v", gv, vorder))
> ValueError: Cannot find property map type.

This is a bug in graph-tool. It has been fixed in the most recent git
version.

As a workaround, you can use G.purge_vertices(in_place=True).

Best,
Tiago

--
Tiago de Paula Peixoto <ti...@skewed.de>