Re: [igraph] how to change x type attribute to numeric type attribute?

[Fatemeh a]

Hi, 

Thank you Gabor,

Please consider this example , with the attached file :

               karate3=read.csv(file.choose(), header=TRUE, stringsAsFactors=FALSE,as.is=TRUE)

               karate3[,1]=as.numeric(as.character(karate3[,1])) 

               karate3[,2]=as.numeric(as.character(karate3[,2]))

               E(karate3)$weight <- 5

> karate3

IGRAPH UNW- 26 31 -- 

+ attr: name (v/c), weight (e/n)

              graph_simplify=simplify(karate3,remove.multiple = TRUE,edge.attr.comb=list(Weight="mean"))

> graph_simplify

IGRAPH UNW- 26 29 -- 

+ attr: name (v/c), weight (e/x)

> sum(E(karate3)$weight)

[1] 155

> sum(E(graph_simplify)$weight)

[1] 0

Regards,

Fatemeh

On Sat, Dec 6, 2014 at 5:18 PM, Gábor Csárdi <address@hidden> wrote:

Hi, we need a complete reproducible example to be able to help you.

Gabor

On Sat, Dec 6, 2014 at 6:54 AM, Fatemeh a <address@hidden> wrote:

Hi,

I was wondering how could I resolve this issue :

after using 

  graph_simplify=simplify(graph,remove.multiple = TRUE,edge.attr.comb=list(Weight="mean"))

and the type of the edge attribute weight

change from n(numeric) to x(other) and when i execute sum(E(graph)$weight) , I got zero , how should I change the x type attribute to numeric one ?

thank you in advance,

--

regards

F..A

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regards

F..A

karate3.csv
Description: Text Data