It's not just that counts might be zero, but also that the base of each bar starts at zero. I really don't see how logging the y/axis of a histogram makes sense.
Hadley On Sunday, August 29, 2010, Joshua Wiley <jwiley.ps...@gmail.com> wrote: > Hi Derek, > > Here is an option using the package ggplot2: > > library(ggplot2) > x <- sample(x = 10:50, size = 50, replace = TRUE) > qplot(x = x, geom = "histogram") + scale_y_log() > > However, the log scale is often inappropriate for histograms, because > the y-axis represents counts, which could potentially be 0, and > therefore undefined (R outputs -Inf). Another option using base > graphics would be something along the lines (no pun intended) of: > > temp <- hist(x, plot = FALSE) #get histogram data > plot(x = temp$mids, y = log(temp$counts), type = "h") > > HTH, > > Josh > > On Sun, Aug 29, 2010 at 6:58 PM, Derek M Jones <de...@knosof.co.uk> wrote: >> All, >> >> I have been trying to get calls to hist(...) to be plotted >> with the y-axis having a log scale. >> >> I have tried: par(ylog=TRUE) >> >> I have also looked at the histogram package. >> >> Suggestions welcome. >> >> -- >> Derek M. Jones tel: +44 (0) 1252 520 667 >> Knowledge Software Ltd mailto:de...@knosof.co.uk >> Source code analysis http://www.knosof.co.uk >> >> ______________________________________________ >> 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. >> > > > > -- > Joshua Wiley > Ph.D. Student, Health Psychology > University of California, Los Angeles > http://www.joshuawiley.com/ > > ______________________________________________ > r-h...@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. > -- Assistant Professor / Dobelman Family Junior Chair Department of Statistics / Rice University http://had.co.nz/ ______________________________________________ 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.
