Ternary Plots Do Not Display Ellipses in PDF
On Wed, 15 Oct 2014, David L Carlson wrote:
I haven't looked at the source so I don't know exactly what is going on,
but I think I have a work around. While running your example I noticed
that ellipse() does not just add the ellipse to the plot produced by
plot(), it replots the figure. However, just running ellipse() without
plot() generates an error "Error in if (coorgeo == "acomp") { : argument
is of length zero" so ellipse needs the plot environment produced by
plot(). Moving the pdf() file works on my Windows machine:
plot(winters.acomp, main="Winters Creek", cex=0.5)
pdf("winters-pdf.pdf")
ellipses(mean=mn, var=vr, r=r, steps=72, thinRatio=NULL, aspanel=FALSE,
+ col='red', lwd=2)
dev.off()
David, How interesting! I saw what I now know as the plot being redrawn when the ellipses were added but did not recognize the significance. I'll try this in a while but it should work here, too. Much appreciated, Rich