Hello, Continue with
polygon(-rev(cord.x), rev(cord.y), col = 'skyblue') Hope this helps, Rui Barradas Às 17:25 de 02/10/2018, Steven Yen escreveu:
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')
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