Thanks!!! It did wonders. Steven On 10/3/2018 9:39 AM, David Winsemius wrote: >> 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 > > > > > >
-- 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.