> On Oct 2, 2018, at 5:50 PM, Steven Yen <st...@ntu.edu.tw> wrote: > > Great. Thanks! It did wonders. > 1. Is there a way to suppress the obvious tick stops (-3,-2,-1,0,1,2,3) > and mark only the ticks -1.96 and 1.96. > 2. Better yet, to draw vertical lines at x = -1.96 and x = 1.96. > Thanks.
Read ?plot.default Then add xaxt="n" to the arguments to curve, ... and afterwards: axis( 1, at=c(-1.96, 1.96),lab=c(-1.96, 1.96) ) abline( v= c(-1.96, 1.96) ) -- > Steven > > On 10/3/2018 12:51 AM, Rui Barradas wrote: >> 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') >>> >> > > -- > st...@ntu.edu.tw (S.T. Yen) > > > [[alternative HTML version deleted]] > > ______________________________________________ > R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see > https://stat.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide http://www.R-project.org/posting-guide.html > and provide commented, minimal, self-contained, reproducible code. David Winsemius Alameda, CA, USA 'Any technology distinguishable from magic is insufficiently advanced.' -Gehm's Corollary to Clarke's Third Law ______________________________________________ R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
