[R] legend with mixed boxes and lines (not both)

From: Michael Toews <mwtoews_at_sfu.ca>
Date: Mon, 14 May 2007 18:13:21 -0700

I seem to be unable to get a mixed legend that has lines *or* polygons (not both). For example:

ppi <- seq(0,2*pi,length.out=21)[-21]
plot.window(ylim=c(-5,5),xlim=c(-5,5),asp=1) polygon(cos(ppi)*4+rnorm(20,sd=.2),sin(ppi)*4+rnorm(20,sd=.2),



    fill=c("green","blue",NA),col=c(NA,NA,"red"),     lwd=c(NA,NA,1))

I'm really guessing the behaviour in the legend() call, by setting fill to NA for the item, etc. I also tried fill=c("green","blue",FALSE), but that didn't go over too well either. I also tried adding "merge=TRUE", but that just puts the line into the box. I also tried using box.lwd=c(1,1,0), but that also did not work Is there either a way to do this or a clean workaround? Thanks in advance. +mt

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