[R] graph from txt file

[Rui Barradas]

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 <ruipbarradas at sapo.pt
> <mailto:ruipbarradas at 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
>         <ehlers at ucalgary.ca <mailto:ehlers at 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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