Target Plot?

Jason Rupert <jasonkrupert <at> yahoo.com> writes:
 
 ?

Also, do you know how to make the radial rings "black" and a little thicker??

A co-worker requested that the?be made a little darker and easier to see.

?

library(plotrix)

ions<-c(3.2, 5.0, 2.0)
ion.names<-c("Na","Ca","Mg")

radial.plot(ions, labels=ion.names, rp.type="s", start=90*(3.14159/180), 
             main="Dissolved ions in water", point.symbols=16,
point.col="green",             grid.col="black",
             radial.lim=c(0,6), show.centroid=FALSE, cex=4)
text(1,2, "Sodium is hot")
text(5,2, "Mg bitter")

...
 
Also, do you know how to make the radial rings "black" and a little 
thicker?  A co-worker requested that the be made a little darker and 
easier to see.

Hi Jason,
You can make the radial grid black with grid.col="black", but 
unfortunately there is no option for a thicker grid. You could add lwd=2 
to line 170 if you just want a one-off.

Jim