[R] polygon circling a graph

email email8889 at gmail.com
Thu Nov 14 19:03:35 CET 2013


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)
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?


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