Re: [igraph] igraph-help Digest, Vol 102, Issue 13

[Николай Кинаш]

Hello.

Issue is still persists

>>> graph = ig.Graph()

>>> graph.add_vertex()

>>> graph.vs[0]["age"] = 55

>>> graph.vs[0]["age"]

55

>>> graph = ig.Graph.Barabasi(graph.vcount()+3, 3, power=2.5, start_from=graph, outpref=True)

>>> graph.vs[0]["age"]

Traceback (most recent call last):

  File "<stdin>", line 1, in <module>

KeyError: 'Attribute does not exist'

>>> graph = ig.Graph()

>>> graph.add_vertex()

>>> graph.vs[0]["age"] = 55

>>> graph.vs[0]["age"]

55

>>> g = ig.Graph.Barabasi(graph.vcount()+3, 3, power=2.5, start_from=graph, outpref=True)

>>> g.vs[0]["age"]

Traceback (most recent call last):

  File "<stdin>", line 1, in <module>

KeyError: 'Attribute does not exist'

>>> graph.vs[0]["age"]

55

>>> 

 

Message: 4
Date: Wed, 14 Jan 2015 21:36:54 +0900
From: ??????? ????? <address@hidden>
To: address@hidden
Subject: [igraph] Save vertex property
Message-ID:
        <address@hidden>
Content-Type: text/plain; charset="utf-8"

Hello

>>> graph = ig.Graph()
>>> graph.add_vertex()
>>> graph.vs[0]["age"] = 55
>>> graph.vs[0]["age"]
55
>>> graph = ig.Graph().Barabasi(graph.vcount()+3, 3, power=2.5,
start_from=graph, outpref=True)
>>> graph.vs[0]["age"]
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
KeyError: 'Attribute does not exist'


It is possible to save "age" property after ig.Graph().Barabasi ?


Thanks.
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Message: 5
Date: Wed, 14 Jan 2015 15:09:50 +0100
From: Tamas Nepusz <address@hidden>
To: Help for igraph users <address@hidden>
Subject: Re: [igraph] Save vertex property
Message-ID: <address@hidden>
Content-Type: text/plain; charset=us-ascii

> >>> graph = ig.Graph().Barabasi(graph.vcount()+3, 3, power=2.5,
> ...   start_from=graph, outpref=True)
I'm quite surprised that it works at all to be honest. The correct invocation
would be:

ig.Graph.Barabasi(graph.vcount()+3, 3, power=2.5, ...)

Graph.Barabasi is a class method so it must be invoked directly on the Graph
class, not on a Graph instance. Can you repeat your code with the above
modification and check if the issue still persists?

All the best,
T.


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End of igraph-help Digest, Vol 102, Issue 13
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