[R] Polygon function

[Cetinyürek Aysun]

Dear all,
I would like to plot credible interval for a function estimate in R. I
would like to plot the credible intervals as shaded region using polygon
function. Does anyone ever used that? I tried several times but I could
not obtain the right figure.

xis=sort(xi,decreasing=TRUE)

plot(xi,fm)
polygon(c(xi,xis),c(f05m,f95m))

The above piece of code produces something else.

Many thanks in advance,



Aysun