[R] Draw a circle on a filled.contour() plot

Hi all, I'm trying to use symbols() to draw a circle of a given radius at a given position onto a filled.contour() plot. The commands I issue are: filled.contour(y,x,z,levels=seq (0.02,1.0,len=50),color.palette=colorRampPalette(c (blue,yellow,red)),title=title(main=,xlab=,ylab=))

Re: [R] Draw a circle on a filled.contour() plot

The output produced by 'filled.contour' is actually a combination of two plots; one is the filled contour and one is the legend. Two separate coordinate systems are set up for these two plots, but they are only used internally - once the function has returned these

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