Hi Folks, I'm advising someone who's a beginner with R, and therefore wants the simplest answer possible.
The issue is to produce a plot using plot(x,y,...) where, on the X-axis, the tick-marks should be on the lines of: -- Range of X-axis: 0:1000 -- tick-marks labelled "0","200",...,"800","1000" -- unlabelled tick-marks every 50 from 0 to 1000. regardless of the actual range of x-values (which however would normally range over most of 0:1000). I've looked at the Q-Q Plot example in the MASS book (Section 3.4), which does achieve this kind of effect, but the code is too complicated for the present context. (Whatever code is used needs to be readily changeable for different plots of the same general kind). Is there a way of supplying straightforward arguments to plot() which would achieve this? I've been reading and site-searching for a while, and the best I can find is on the lines of plot((x,y,pch="+",col="blue",xlim=c(0,1000),xaxt="n") par(xaxp=c(0, 1000, 50)) axis(1) which is already complicated enough in the present context; but it doesn't do exactly what is required since (for example) if the x-values range from 0 to 900 the labelled tick-marks are at 0 60 140 220 300 380 460 540 620 700 780 860 940 and have therefore been computed from the range of the data, and not from the specified range of the x-axis. Help please! Best wishes to all, Ted. -------------------------------------------------------------------- E-Mail: (Ted Harding) <[EMAIL PROTECTED]> Fax-to-email: +44 (0)870 094 0861 Date: 30-Nov-07 Time: 11:55:16 ------------------------------ XFMail ------------------------------ ______________________________________________ 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.
