The my.symbols function in the TeachingDemos package works here. It was designed to work like symbols, but with user defined symbols:
library(TeachingDemos) theta <- seq(0, 2*pi, len=256) circ <- cbind( cos(theta), sin(theta) ) x <- runif(10) y <- rnorm(10, 100, 20) z <- runif(10, .5, 1) my.symbols(x,y, circ, inches=.3, add=FALSE) my.symbols(x,y, circ, inches=.3, lty='dashed', add=FALSE) my.symbols(x,y, circ, inches=.5*z, lty='dashed', add=FALSE) -- Gregory (Greg) L. Snow Ph.D. Statistical Data Center Intermountain Healthcare greg.s...@imail.org 801.408.8111 > -----Original Message----- > From: r-help-boun...@r-project.org [mailto:r-help-boun...@r- > project.org] On Behalf Of Duncan Murdoch > Sent: Monday, April 27, 2009 3:48 PM > To: Christophe Dutang > Cc: r-help@r-project.org > Subject: Re: [R] problem with symbol function > > On 27/04/2009 5:23 PM, Christophe Dutang wrote: > > so it could be a limitation of graphics on windows? > > It's not graphics on Windows, but it appears to be a limitation of the > windows() graphics device in R. It is used for bitmap plots as well as > on-screen plots, which is why you saw the same effect in jpeg, but > different devices are used for Postscript and PDF. > > When drawing lines, R handles the dash style itself, rather than using > the built-in dashes. But it doesn't do so for circles, and doesn't > make > use of the Windows line styles. > > If you really need the dashes onscreen, you can draw the circle > yourself. Assuming the scales are equal on both axes that's easy, just > use > > > theta <- seq(0,2*pi, len=256) > > lines(x+r*cos(theta), y+r*sin(theta), lty="dashed") > > (where (x,y) is the center and r is the radius). It's more work if you > want things to appear as circles when the scales are unequal, but I > think this works: > > circle <- function(x, y, inches=1, ...) { > theta <- seq(0, 2*pi, len=256) > lines(x + grconvertX(inches*cos(theta), "inches", "user") - > grconvertX(0, "inches", "user"), > y + grconvertY(inches*sin(theta), "inches", "user") - > grconvertY(0, "inches", "user"), > ...) > } > > so you'd get the plot you wanted using > > circle(0, 0, inches = 1.5, fg="black",lty="dashed") > > The circle function is not vectorized, so it's not as useful as > symbols, > but it could be improved. > > Duncan Murdoch > > > > > > It also appears with "long dash" lines. > > > > x <- -4:4 > > y <- -4:4 > > > > plot(x,y,type="n") > > > > symbols(0, 0, add = TRUE, circles = 1, inches = 1, fg="black", > > lty="solid") > > > > symbols(0, 0, add = TRUE, circles = 1, inches = 2, > > fg="black",lty="dashed") > > > > symbols(0, 0, add = TRUE, circles = 1, inches = 3, > > fg="black",lty="longdash", lwd=2) > > > > > > Le 27 avr. 09 à 23:07, Joshua Wiley a écrit : > > > >> I read that the lty=2 argument does not work on all graphics > >> devices. You might double check that since it works on mac. > >> > >> > >> Joshua Wiley > >> > >> > >> > >> ---- Original message ---- > >>> Date: Mon, 27 Apr 2009 22:58:11 +0200 > >>> From: Christophe Dutang <duta...@gmail.com> > >>> Subject: Re: [R] problem with symbol function > >>> To: Joshua Wiley <jwile...@ucr.edu> > >>> Cc: r-help@r-project.org > >>> > >>> This point is ok if I download R from the Austrian mirror. R is > >>> properly install on both computers. I also get this strange > behavior > >>> with R 2.7.2. There is something I'm missing... > >>> > >>> > >>> Le 27 avr. 09 à 22:54, Joshua Wiley a écrit : > >>> > >>>> I am running SP3. You said earlier that you were having trouble > >>>> downloading 2.9.0, are you sure everything downloaded and > installed > >>>> properly? There have been some questions about transitioning to > the > >>>> new build going around. > >>>> > >>>> Joshua Wiley > >>>> > >>>> > >>>> > >>>> ---- Original message ---- > >>>>> Date: Mon, 27 Apr 2009 22:45:26 +0200 > >>>>> From: Christophe Dutang <duta...@gmail.com> > >>>>> Subject: Re: [R] problem with symbol function > >>>>> To: Joshua Wiley <jwile...@ucr.edu> > >>>>> Cc: r-help@r-project.org > >>>>> > >>>>> what is your service pack version? > >>>>> > >>>>> at home I use the SP2 version. > >>>>> > >>>>> Le 27 avr. 09 à 22:29, Joshua Wiley a écrit : > >>>>> > >>>>>> Hi Christophe, > >>>>>> > >>>>>> I am able to plot dashed circles on Windows. I'm afraid I do not > >>>>>> have any suggestions for you. What happens when you try to plot > it > >>>>>> on Windows? > >>>>>> > >>>>>> > >>>>>> Joshua Wiley > >>>>>> > >>>>>> > >>>>>> ---- Original message ---- > >>>>>>> Date: Mon, 27 Apr 2009 22:15:53 +0200 > >>>>>>> From: r-help-boun...@r-project.org (on behalf of Christophe > >>>>>>> Dutang <duta...@gmail.com > >>>>>>>> ) > >>>>>>> Subject: [R] problem with symbol function > >>>>>>> To: r-help@r-project.org > >>>>>>> > >>>>>>> Hi all, > >>>>>>> > >>>>>>> I use the symbol functions to draw circles. But the argument > lty > >>>>>>> does > >>>>>>> not work on windows but works correctly on my macbook: > >>>>>>> > >>>>>>> x <- -4:4 > >>>>>>> y <- -4:4 > >>>>>>> > >>>>>>> plot(x,y,type="n") > >>>>>>> > >>>>>>> symbols(0, 0, add = TRUE, circles = 1, inches = 1, fg="black", > >>>>>>> lty="solid") > >>>>>>> > >>>>>>> symbols(0, 0, add = TRUE, circles = 1, inches = 2, fg="black", > >>>>>>> lty="dashed") > >>>>>>> > >>>>>>> > >>>>>>> The second circle should be drawn with dash... it works on my > >>>>>>> macbook > >>>>>>> but on my PC. > >>>>>>> > >>>>>>> I use R 2.9.0 on windows xp home and mac os 10.5. > >>>>>>> > >>>>>>> Does anyone have this problem? is it a limitation of windows? > >>>>>>> > >>>>>>> thanks in advance > >>>>>>> > >>>>>>> > >>>>>>> Christophe > >>>>>>> > >>>>>>> -- > >>>>>>> Christophe Dutang > >>>>>>> Ph. D. student at ISFA, Lyon, France > >>>>>>> website: http://dutangc.free.fr > >>>>>>> > >>>>>>> > >>>>>>> > >>>>>>> > >>>>>>> > >>>>>>> [[alternative HTML version deleted]] > >>>>>>> > >>>>>>> ______________________________________________ > >>>>>>> R-help@r-project.org mailing list > >>>>>>> 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. > >>>>> -- > >>>>> Christophe Dutang > >>>>> Ph. D. student at ISFA, Lyon, France > >>>>> website: http://dutangc.free.fr > >>>>> > >>>>> > >>>>> > >>>>> > >>> -- > >>> Christophe Dutang > >>> Ph. D. student at ISFA, Lyon, France > >>> website: http://dutangc.free.fr > >>> > >>> > >>> > >>> > > > > -- > > Christophe Dutang > > Ph. D. student at ISFA, Lyon, France > > website: http://dutangc.free.fr > > > > > > > > > > > > [[alternative HTML version deleted]] > > > > > > > > --------------------------------------------------------------------- > --- > > > > ______________________________________________ > > R-help@r-project.org mailing list > > 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. > > ______________________________________________ > R-help@r-project.org mailing list > 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. ______________________________________________ R-help@r-project.org mailing list 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.