dear all,
I have a xy plot in which x is logarithmic. The plot is fine, and I can
also represent the logarithimic axis usign a tip given me by William
Dunlap. However I would like to plot the actual x value rather than the
log10 s in this case. If I remove the xaxt="n" the plot reports the
scientific notation of the log, a rough version of the nice notation
written by William Dunlap.
So how can I write the value of the x axis?
############################################################################
y<-c(25.84, 26.84, 27.85, 28.86, 29.86, 30.87, 31.88, 32.88, 33.89,
34.90, 35.90, 36.91)
x<- c(1000, 500, 250, 125, 62.50, 31.25, 15.63, 7.81, 3.91, 1.95,
0.98, 0.49)
plot(x, y, pch=16, type="b", log="x", xaxt="n", ylab=expression(bold("Y
axis")), xlab=expression(bold("X axis")))
xlim <- par("usr")[1:2]
lab.x <- seq(ceiling(xlim[1]), floor(xlim[2]))
axis(side=1, at=10^lab.x, lab=as.expression(lapply(lab.x,
function(x)bquote(10^.(x)))))
###########################################################################
Thank you very much,
Luigi
PS probably the x axis values should have the form:
x.axis<-c(0.49, 0.98, 1.95, 3.91, 7.81, 15.63, 31.25, 62.50, 125, 250, 500,
1000)
[[alternative HTML version deleted]]
______________________________________________
[email protected] 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.
