David Epstein <[EMAIL PROTECTED]> wrote: > Please excuse me for asking such basic questions: > > Here is my code > > y=c(1.21,0.51,0.14,1.62,-0.8,0.72,-1.71,0.84,0.02,-0.12) > > ybar=mean(y) > > ll=length(y); > > ybarv=rep(ybar,ll) > > x=1:ll > > plot(x,ybarv,pch=1) > > segments(x[1],ybar,x[ll],ybar) > > What I get is a collection of small circles, with a segment "on top" > of the circles, which is almost what I want. But I don't want the > segment to be visible inside any small circle. > > Is there an easy way to arrange for the segment to "lie behind" the > pch=1 markers, as in hidden line removal, so that the circles remain > with nothing inside them? I tried putting the segments command first, > but then no segment appeared at all.
Try using pch = 21 and the "bg" parameter to set the fill color. That lets you set the background color of the circle so that it will conceal the line segment. In general in R graphics, objects are drawn in the order specified. However, the default background of plotting symbols is transparent, so in your case, the order doesn't matter. -- Mike Prager, NOAA, Beaufort, NC * Opinions expressed are personal and not represented otherwise. * Any use of tradenames does not constitute a NOAA endorsement. ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
