[R] polygon circling a graph

Carl Witthoft carl at witthoft.com
Thu Nov 14 20:34:32 CET 2013

Please post the packages from which 'barabasi' and 'layout.fruch....'
originate (not to mention whatever the plot() method is for whatever class
your 'g' is).  Further, without seeing what your data look like we have no
way of knowing whether you've fed the appropriate elements of "L" to chull.

email mail wrote
> Hi:
> I want to create a polygon encircling a graph. For this i use convex
> hull  to get the coordinate points for polygon.
> g <- barabasi.game(10)
> L<-layout.fruchterman.reingold(g)
> temp1 <- chull(L)
> temp1 <- c(temp1, temp1[1])
> plot(g, layout=layout.fruchterman.reingold)
> But when i plot the polygon with the code below, the polygon dosen't
> encircle the graph.
> polygon(L[temp1, ], col = "#0000FFAA")
> How can I plot a polygon circling a graph?
> Regards:
> John
> ______________________________________________

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