I'm wondering how the cex parameter is used to scale circles (i.e. does it
scale the radius, diameter, area, circumference, etc.?). In my case I'm using
lattice with filled circles (pch=19).
Based on example, it looks like R scales the radius of the circle:
library(lattice)
dta<-data.frame(x=rep(1,6),y=rep(1,6),sz=c(1,2,4,8,16,32))
xyplot(x~y,data=dta,col=rgb(0,0,0,50,maxColorValue=255),cex=dta$sz,pch=19)
But I haven't been able to find confirmation in any R documentation, so any
assistance would be much appreciated. Cheers.
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