>>>>> Brian Smith <bsmith030...@gmail.com> >>>>> on Thu, 19 May 2016 11:04:55 -0400 writes:
> Thanks all !! On Thu, May 19, 2016 at 9:55 AM, Ivan
> Calandra <ivan.calan...@univ-reims.fr> wrote:
>> Hi,
>>
>> You can do it by first plotting your values without the
>> x-axis: plot(x,y,log="xy", xaxt="n")
>>
>> and then plotting the x-axis with ticks where you need to:
>> axis(side=1, at=seq(2000,8000,1000))
Getting nicer looking axis ticks for log-scale axes (and
traditional graphics) I have created the function
eaxis()
and utility function pretty10exp(.)
and I also created standard R's axTicks(.) to help with these.
if(!require("sfsmisc")) install.packages("sfsmisc")
require("sfsmisc")
x <- lseq(1e-10, 0.1, length = 201)
plot(x, pt(x, df=3), type = "l", xaxt = "n", log = "x")
eaxis(1)
gives the attached plot
eaxis-log-example.pdf
Description: Adobe PDF document
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