A mix of Petr and William's answers will sort you out. You had two problems:
the base 10/e problem and the axes swapping problem.


?dput

I didn't know about that one either - very useful!


andydolman@gmail.com


2009/6/5 Petr PIKAL <petr.pikal@precheza.cz>

Hi
>
> r-help-bounces@r-project.org napsal dne 04.06.2009 16:11:29:
>
> > I want to make a log-log plot with a regression line, but I can't figure
> > out what I'm doing wrong. What I'm trying is:
> >
> > plot(mass,area, log="xy", pch=as.numeric(food))
> > abline(lm(mass~area))
>
>
> abline(lm(area~mass))
>
> >
> > or
> >
> > plot(mass,area, log="xy", pch=as.numeric(food))
> > islands$logmass <- log(mass)
> > islands$logarea <- log(area)
> > attach(islands)
> > abline(lm(logmass~logarea))
>
> abline(lm(logarea~logmass))
>
> >
> >
> > But that does not show a line. Where am I going wrong?
>
> plot(x,y)
> but
> lm(y~x)
>
> Regards
> Petr
>
> >
> > data:
> > island, area,species,food,mass
> > Ibiza , 577 ,  Anser n. sp., herb,  2.0
> > Ibiza , 577 ,    Haliaeetus albicilla, carn, 4.8
> > Mauritius , 1874 ,  Raphus cucullatus, herb,  19
> > Mauritius , 1874 ,  Circus alphonsi, carn, 0.63
> > Mallorca , 3667 , Myotragus balearicus, herb,  40
> > Mallorca , 3667 , Aquila chrysaetos, carn, 4.2
> > Kreta , 8259 , Elephas creutzburgi, herb,  3200
> > .......
> >
> > /Par
> >
> > --
> > Par Leijonhufvud                               par@hunter-gatherer.org
> > I don't believe in reincarnation.  I used to,
> > but that was in another life.
> >
> > ______________________________________________
> > 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.
>

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