Hello,

Just set the attribute,

V(g)$date <- as.POSIXct(as.POSIXlt(rep(315522000, 6), origin="1970-01-01"))
V(g)$date


Rui Barradas

Em 30-06-2012 04:26, HIMANSHU MITTAL escreveu:
Thanks a lot.
But i have one more doubt
one of the attribute i have is time of edge formation

id1,id2,label,time
51,66,0,315522000
51,66,0,315522000
140,157,0,315522000
140,173,0,415522000
so is there any attribute for storing timestamps like for weight or color
or if i store it in color would i lose the information?

On Sat, Jun 30, 2012 at 2:56 AM, Rui Barradas <ruipbarra...@sapo.pt
<mailto:ruipbarra...@sapo.pt>> wrote:

    Hello,

    Package igraph can create graphs. Example:

    dat <- read.table(text="
    node1  node2  attr1  attr2
    2  1  2  3
    3  2  3  2
    4  3  4  2
    6  5  1  4
    ", header=TRUE)
    dat

    vertices <- as.vector( t(dat[, 1:2]) )

    g <- graph(vertices, directed=FALSE)
    E(g)$weight <- dat$attr1
    E(g)$color <- dat$attr2

    plot(g, layout=layout.circle, edge.label=E(g)$weight,
    edge.color=E(g)$color)


    Also, you should post data examples like the posting guide says.
    With your description, a small example like the one above would do.

    Hope this helps,

    Rui Barradas

    Em 29-06-2012 19:05, HIMANSHU MITTAL escreveu:

        yes i would prefer igraph, but it can be any r package as long
        as it can
        create the graph

        On Fri, Jun 29, 2012 at 11:14 PM, Peter Ehlers
        <ehl...@ucalgary.ca <mailto:ehl...@ucalgary.ca>> wrote:

            On 2012-06-29 10:28, HIMANSHU MITTAL wrote:

                Hi all,
                I have a text file in which the graph info is stored as:
                node1 node2 attr1 attr2
                where there is an edge b/w node1&2 and attr1&2 are edge
                atttributes

                  is there any way to create a graph using such format in r?


            The igraph package?

            Peter Ehlers


                Regards,
                Himanshu Mittal

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