Re: [igraph] reading edgelist with weight

[Gábor Csárdi]

On Fri, Dec 7, 2012 at 4:43 AM, Ross KK Leung <address@hidden> wrote:

Since the data contain patient information so I have spent a day to dig

out the problem. It turns out that some of my rows contain character "; "
and after removing the problematic record, igraph works perfectly and I
really appreciate your and Gabor's help on creating this marvelous package!

Just for the record, ";" is fine if it is part of the vertex names (unlikely scenario, though), or stands right after the edge weights. I.e. 

a; b; 3;

c; d; 5

f a;  4

is fine. The problem is if you have more than three columns in the file, that file is not valid, even if the extra column only has a semicolon (or anything else). So this is bad:

a; b; 3;

c; d; 5 ;

f a;  4

Gabor

 

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Gabor Csardi <address@hidden>     MTA KFKI RMKI