[igraph] a question about importing graph object

[Niklas Fischer]

Dear igraph list members,

I'm newbie in  R and igraph, so I am not sure if I can import egocentric data  

as below: merging ego-alter, alter-ties together as indirected graph.

Appreciated if you let me know about whether anything wrong with this logic.

data<- data.frame(name=c("e1", "e2", "e3", "e4", "e5"),

                     age=c(48,33,45,34,21),

    gender=c("F","M","F","M","F"),

# alter ids alters

   alter.1=c("e1a1","e2a1","e3a1","e4a1","e5a1"),

   alter.2=c("e1a2","e2a2","e3a2","e4a2","e5a2"),

   alter.3=c("e1a3","e2a3","e3a3","e4a3","e5a3"),

#ties between alters

#alter1 and alter 2

   tie.1=c(1,0,1,1,1),

#alter1 and alter 3

   tie.2=c(1,0,1,0,1),

#alter2 and alter 3

   tie.3=c(0,0,1,1,1))

#### edge list between ego and alter

data.long<-reshape(data,direction="long", 

varying=list(c(4,5,6)),

idvar="ego",timevar="TIME",v.names="alter"))

edgelist1<- data.long[,c(1,8)]

### edgelist between alter and alter

data.2<-subset(data,data$tie.1 ==1)

edgelista12<-data.frame(data.2$alter.1,data.2$alter.2)

data.3<-subset(data,data$tie.2 ==1)

edgelista13<-data.frame(data.3$alter.1,data.3$alter.3)

data.4<-subset(data,data$tie.3 ==1)

edgelista23<-data.frame(data.4$alter.2,data.4$alter.3)

# merging the edgelists

names(edgelist1)<-names(edgelista12)<- names(edgelista13)<- names(edgelista23)<-c("head","tail")

edgelist<-rbind(edgelist1,edgelista12,edgelista13,edgelista23)

# importing graph object

library(igraph)

g<-graph.data.frame(edgelist[,1:2],directed=FALSE)

g

IGRAPH UN-- 20 25 -- 

attr: name (v/c)

Niklas