Can someone help me with polygon. The following codes are self-runnable
and mark a shaded area under the standard normal curve in the x-range
(-3,-1).
Is there a way to also mark the area in (1,3), at the same time.
That is, I want shaded areas in both tails. Thank you...
===
# Create data for the area to shade
cord.x <- c(-3,seq(-3,-1,0.01),-1)
cord.y <- c(0,dnorm(seq(-3,-1,0.01)),0)
# Make a curve
curve(dnorm(x,0,1), xlim=c(-3,3), main='Standard Normal')
# Add the shaded area.
polygon(cord.x,cord.y,col='skyblue')
--
st...@ntu.edu.tw (S.T. Yen)
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