Denis Chabot <[EMAIL PROTECTED]> writes: > Oops, Mark, bad typo indeed. > > But yaxp is what I had in my R program and it did not help. > > I did obtain control over my tick marks by drawing them myself, as > you suggest. But I was curious as to how to use yaxp since the help > on "par" gives it as a possible way of controlling ticks. Maybe it > should be removed from the help file?
plot(1) par("xaxp") par(xaxp=c(.6,1.4,8)) axis(3) So it does do something... > Thanks for your help, > > Denis > Le 05-10-08 à 11:16, Marc Schwartz a écrit : > > > On Sat, 2005-10-08 at 09:28 -0400, Denis Chabot wrote: > > > >> Hi, > >> > >> A few times I tried to control the number and position of tick marks > >> in plots with the yasp or xasp parameters. For example, a y axis was > >> drawn by default with tick marks at 0, 20, 40, 80 and 100. I tried to > >> get tick marks every 10 by adding > >> > >> yasp=(0, 100, 10) > >> > >> but this had no effect at all. I know I can draw the axis and tick > >> marks manually, but often this simple option would suffice if I could > >> understand how to make it work. > >> > >> Thanks in advance, > >> > >> Denis Chabot > >> > > > > > > I suspect that one problem you are having is that there is no > > par("xasp") or par("yasp")....unless these are typos and you are > > trying > > to use par("xaxp") and par("yaxp")? > > > > There is an 'asp' argument to some of the plot functions (ie. > > plot.default), but this has a different intention. > > > > par("xaxp") and par("yaxp") are not listed as read only pars in ?par, > > however, I cannot recall an instance where R does not overwrite the > > user > > settings during the calculation of the axes, whether passed as > > arguments > > to a plot function or set a priori via a par() call. > > > > If you want explicit control over the tick marks, you will need to use > > axis(), perhaps in combination with axTicks(), after using 'xaxt = > > "n"' > > and/or 'yaxt = "n"' in the plot call, depending upon the > > circumstances. > > > > HTH, > > > > Marc Schwartz > > > > > > > > ______________________________________________ > R-help@stat.math.ethz.ch mailing list > https://stat.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html > -- O__ ---- Peter Dalgaard Øster Farimagsgade 5, Entr.B c/ /'_ --- Dept. of Biostatistics PO Box 2099, 1014 Cph. K (*) \(*) -- University of Copenhagen Denmark Ph: (+45) 35327918 ~~~~~~~~~~ - ([EMAIL PROTECTED]) FAX: (+45) 35327907 ______________________________________________ R-help@stat.math.ethz.ch mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html