Dear Bernard, > On Jul 9, 2020, at 10:25 AM, Bernard Comcast <mcgarvey.bern...@comcast.net> > wrote: > > Use the xlim option in the plot function?
I think you mean ylim, but as you'll find out when you try it, you still (reasonably) get an evenly spaced tick mark at 0: plot(Y ~ X, ylim=c(1e9, 6e11)) The "right" thing to do with exponential values is to plot on a log scale or (as Rui reasonably suggested) use a logged axis. Best, John > > Bernard > Sent from my iPhone so please excuse the spelling!" > >> On Jul 9, 2020, at 10:06 AM, Luigi Marongiu <marongiu.lu...@gmail.com> wrote: >> >> Thank you, >> but why it does not work in linear? With the log scale, I know it >> works but I am not looking for it; is there a way to force a linear >> scale? >> Regards >> Luigi >> >>> On Thu, Jul 9, 2020 at 3:44 PM Fox, John <j...@mcmaster.ca> wrote: >>> >>> Dear Luigi, >>> >>>>> On Jul 9, 2020, at 8:59 AM, Luigi Marongiu <marongiu.lu...@gmail.com> >>>>> wrote: >>>> >>>> Hello, >>>> I have these vectors: >>>> ``` >>>> X <- 1:7 >>>> Y <- c(1438443863, 3910100650, 10628760108, 28891979048, 78536576706, >>>> 213484643920, 580311678200) >>>> plot(Y~X) >>>> ``` >>>> The y-axis starts at 0e0, but the first value is 1.4 billion. Why the >>>> axis does not start at 1e9? >>> >>> Because you're plotting on a linear, not log, scale, and 0*10^11 = 0. >>> >>>> round(Y/1e11) >>> [1] 0 0 0 0 1 2 6 >>> >>> Then try plot(log(Y) ~ X). >>> >>> I hope this helps, >>> John >>> >>> ----------------------------- >>> John Fox, Professor Emeritus >>> McMaster University >>> Hamilton, Ontario, Canada >>> Web: http::/socserv.mcmaster.ca/jfox >>>> >>>> >>>> >>>> -- >>>> Best regards, >>>> Luigi >>>> >>>> ______________________________________________ >>>> 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. >>> >> >> >> -- >> Best regards, >> Luigi >> >> ______________________________________________ >> 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. > > ______________________________________________ > 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. ______________________________________________ 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.
