Re: [igraph] df traversal

[Gábor Csárdi]

See http://cran.r-project.org/doc/manuals/r-release/R-intro.html#Assignment-within-functions

V(graph)$reached[i] <- TRUE

creates a new graph and does not modify the original one.

G.

On Fri, Feb 21, 2014 at 5:03 PM, Ragia Ibrahim <address@hidden> wrote:

hi,


trying to traverse the graph, kindly whats wrong in this..why its infinite loop..


graph_dfs<-function(i) #i is id
{
if(V(graph)$reached[i] == FALSE)
    { # print(str(i)); print("is reachable")
    str(i); print("is reachable")

   V(graph)$reached[i]<-TRUE
   node_neighbours<- c(neighbors(graph, i , mode = 2) )#out direction all=1 2=out 3=in 4 = total

   for( j in 1:length(node_neighbours) )

    graph_dfs(node_neighbours[j])

    }#end if
}


thanks in advance
}

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