Re: [igraph] how to add disconnected nodes to a graph?

[Ahmed Abdeen Hamed]

Thank you!

I tried this graph example in GML format:

graph

[

  node

  [

   id A

  ]

  node

  [

   id B

  ]

  node

  [

   id C

  ]

   edge

  [

   source B

   target A

  ]

  edge

  [

   source C

   target A

  ]

]

This is how I call my reader : 

g = igraph.Graph.Read_GML("test.gml")

Now getting this error:

python graph-stats.py 

Assertion failed: (v != 0), function igraph_vector_destroy, file ../../../src/vector.pmt, line 374.

Abort trap: 6

Any idea what I am doing wrong?

-Ahmed

On Fri, Dec 6, 2013 at 5:06 AM, Tamás Nepusz <address@hidden> wrote:

> How do you add nodes to a graph without connecting from to others via an edge?

Use a different file format that supports disconnected edges. Pajek (https://gephi.org/users/supported-graph-formats/pajek-net-format/) or GML (https://gephi.org/users/supported-graph-formats/gml-format/) are probably the easiest to create.

T.

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