Re: [igraph] Help Reading Ncol data

[Tamas Nepusz]

Hi,

> begin file: testncol.txt
> [...]
> <-End file
That does not seem like an NCOL file for me. An NCOL file should look  
like this:
0  1  12
1  2  5
2  3  2
...
and so on. So simply: source vertex, target vertex, edge weight, all  
separated by whitespace. Edge weights are optional. More information  
here:
http://bioinformatics.icmb.utexas.edu/lgl/#FileFormat

--
T.


> The in Python I tried
> Graph.Read_Ncol('testncol.txt')
> Graph.Read_Ncol('testncol.txt', names=True)
> Graph.Read_Ncol('testncol.txt', names=True, weights=True)
>
> All 3 failed with the following error message forcing me to restart  
> Python
>
> Assertion failed: (v->stor_begin != NULL), function  
> igraph_vector_max, file vector.pmt, line 787.
> Abort trap.
>
> Can someone tell me what I am doing wrong
>
>
> Chandrashekar Shankar
> Material Science and Engineering
> University of Michigan
> address@hidden
>
>
>
>
>
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