Re: [igraph] Hops in graph

[Surendar Swaminathan]

Hello Gabor,

  Thank you.Yes I wrote into a csv file.Is there a way I can retain
the original nodes I used.Like the way I use for
betweenness,closeness. I have 7370 *7370 matrix and when I tried using

 g2<-data.frame(Person=V(g)$name,g2=g1)


Error: cannot allocate vector of size 58 Kb
In addition: Warning messages:
1: In class(value) <- "data.frame" :
  Reached total allocation of 1535Mb: see help(memory.size)
2: In class(value) <- "data.frame" :
  Reached total allocation of 1535Mb: see help(memory.size)

Help on this would be great.

Surendar




On Tue, Apr 6, 2010 at 1:43 AM, Gábor Csárdi <address@hidden> wrote:
> Hello Surendar,
>
> On Mon, Apr 5, 2010 at 10:47 PM, Surendar Swaminathan
> <address@hidden> wrote:
>> Hello Graph experts,
>>
>>   I am trying to find number of hops between any two nodes for the
>> whole graph.
>> for example if I say
>>
>> Node1    Node2
>>
>> 1              2
>> 2              3
>> 3              4
>>
>> I want to say from "1" to "4" it has to pass through "2" and "3". So,
>> total number of hops would be 2.
>>
>> Is there anyways I can do this in Igraph.
>>
>> tab<- read.csv("flie.csv")
>> g<-graph.data.frame(tab,directed=False)
>> g1<-shortest.paths(g)
>
> What is wrong with this code? (Except that 'False' should be 'FALSE'.)
> The only difference between 'shortest.paths' and your definition is
> that you need to subtract one from the 'shortest.paths' result.
> 'shortest.paths' is counting the edges, and you're counting the nodes
> along the path.
>
>> How do I output this in excel sheet to read them?
>
> Please see the 'write', 'write.table' and 'write.csv' functions. You
> can import the CSV file into Excel directly.
>
> Best,
> Gabor
>
>> What is the better way to output this result ?
>> Help on this would be great.
>>
>> Thanks
>> Surendar
>>
>>
>> _______________________________________________
>> igraph-help mailing list
>> address@hidden
>> http://lists.nongnu.org/mailman/listinfo/igraph-help
>>
>
>
>
> --
> Gabor Csardi <address@hidden>     UNIL DGM
>
>
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