[R] behaviour of plot() when coord. are out of range

[Marcus Eger]

Dear all,

a question concerning the plot range. When I plot
at first with linear coordinates, a subsequent polygon() call produces
a figure that I expect. However, when I apply a logarithmic scale,
two polygons appear. Is it possible to override this behaviour?

  M. Eger


Example:

y <- c(1.84147098480790, 1.90929742682568, 1.14112000805987,
0.243197504692072, -0.958924274663133,0.720584501801074,
1.65698659871879, 1.98935824662338, 1.41211848524176,0.45597888911063)

plot(y,ylim=c(0.0000000001,2),type="l")

plot(y,ylim=c(0.0000000001,2),type="l",log="y")
Warning in xy.coords(x, y, xlabel, ylabel, log) : 
	 1 y value <= 0 omitted from logarithmic plot

polygon(1:10,y,col="red")

-- 
+-------------------------------------------------------
| Marcus Eger
| Philipps Universitaet Marburg
| Fachbereich Physik AG Neurophysik
| Renthof 7
| 35032 Marburg
| Tel. +49 6421 282-4169
| Fax  +49 6421 282-7034
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| E-Mail: marcus.eger at physik.uni-marburg.de
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