[R] Logarithmic axis

[Gabor Grothendieck]

See:

http://finzi.psych.upenn.edu/R/Rhelp02a/archive/57255.html

On Nov 20, 2007 1:21 PM, John Wiedenhoeft <john at nurfuerspam.de> wrote:
> Hi there,
>
> I guess this must be a standard issue, but I'm starting to go crazy with it. I
> simply want a plot with the x axis being logarithmic, having labels 1, 10,
> 100..., and ten unlabelled ticks between each of them - just as they
> introduce logarithmic axis at school. I've played around a bit with log="x",
> xlog=T (where exactly is the difference here?), xaxp, and xaxt (unfortunately
> xaxt="l" isn't implemented). The best I get is a plot with an axis having a
> single 100 and nothing else...
>
> here is what I've tried:
>
> pdf(file="kennlinien.pdf");
> par(log="x", xlog=TRUE);
> kennlinie1 <-  c(8.0746909, 3.9916973, 9.9789444, 19.962869);
> kennlinie2 <-  c(6.0994206, 8.9661081, 19.924883, 31.879496);
> reizstaerke <- c(76, 92, 108, 124);
> #plot(reizstaerke, kennlinie1, ylim=c(0, max(kennlinie1, kennlinie2)),
> xlim=c(0, max(reizstaerke)), log="x", xlog=TRUE, xaxp=c(1, 2, 1), type="b");
> #plot(reizstaerke, kennlinie1, type="b", log="x", xlog=TRUE, xaxp=c(1, 2, 3));
> plot(reizstaerke, kennlinie1, type="b",usr=c(min(reizstaerke),
> max(reizstaerke), min(kennlinie1, kennlinie2), max(kennlinie1, kennlinie2)),
> log="x", xlog=TRUE, xaxp=c(1, 2, 3));
> #points(reizstaerke, kennlinie2, xlog=TRUE, xaxp=c(1, 3, 3), type="b");
> dev.off();
>
> Certainly I've missed something, but I can't figure it out.
>
> Any help appreciated,
> Cheers,
> John
>
>
>
> platform       i486-pc-linux-gnu
> arch           i486
> os             linux-gnu
> system         i486, linux-gnu
> status
> major          2
> minor          4.1
> year           2006
> month          12
> day            18
> svn rev        40228
> language       R
> version.string R version 2.4.1 (2006-12-18)
>
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