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I'd like to reproduce something like this plot in R, maybe a little simpler:

http://macroblog.typepad.com/.a/6a00d8341c834f53ef017eea036eda970d-popup

The relevant command seems to be stars, and the closest example from the stars command help seems to be 

stars(mtcars[4:6, 1:5], 
      locations = c(0,0), 
      radius = FALSE, 
      key.loc=c(0,0), 
      main="Motor Trend Cars", 
      lty = 2)

but I'd like

  1. control over color and thickness of lines,
  2. extend rays beyond the edges,
  3. include "grid lines" to show distance from origin.

Suggestions?

DKB at NYU
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    [This post](http://stackoverflow.com/questions/9614433/creating-radar-chart-a-k-a-star-plot-spider-plot-using-ggplot2-in-r) explains how to make radar charts with [ggplot](http://docs.ggplot2.org/). – Lenwood Aug 09 '13 at 18:27
  • @Lenwood: Thanks a lot. That led me to me to the fmsb package, which works. This example needs some tweaking, but it makes the point: library("fmsb") radarchart(mtcars[4:8,1:5], maxmin=FALSE, centerzero=TRUE) – DKB at NYU Aug 12 '13 at 15:06

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