[R] what does boxplot draw?
wl at eimb.ru
Sun May 11 15:03:06 CEST 2003
Unfortunately I cannot find in the documentation what determines
ranges of a 'box' in the box-and-whisker plot.
It is said in "Simple R" (http://www.math.csi.cuny.edu/Statistics/R/simpleR)
that they are 1st and 3rd Qus usually.
I tried to add to boxplot lines with (quantile(x,probs=0.25)), but
lines do not coincide with edges of boxes.
Here's the example. I've got 3 vectors of values, x1,x2,x3
draws 3 box-and-whisker diagrams.
draw lines with y values of quantiles.
Lines ends are close to the box edges but not exactly on them.
puts lines with ends exactly on the middle line of the box-and-whisker
Wladimir Eremeev mailto:wl at eimb.ru
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