Hi Pedro, You need to set the expand parameter to c(0,0) :
scale_y_continuous(limits=c(0,10), expand = c(0,0)) ggplot uses expand_range internally to ensure that you always have some space between the data and the margins (and you should make sure this happens in your plot too - otherwise it can be hard to see data points on the sides) Hadley On 11/1/07, Pedro de Barros <[EMAIL PROTECTED]> wrote: > Dear UserRs, > > I am trying to use systematically ggplot2 for most of my plots, but I > am fighting some lack of documentation, which I try to overcome. > > I want to build a scatterplot where the axes cross exactly at (0,0). > I tried using scale_y_continuous(limits=c(0,10)), but I always get an > extra space at the bottom of the axes. The code I used is below. > > > plotdata<-data.frame(x=1:10, y=runif(10)) > > plot<-ggplot() > > plot<-plot+layer(data=plotdata, mapping=aes_string(x='x',y='y'), > geom='point', stat='identity', size=4) > > plot<-plot+ scale_y_continuous(limits=c(0,1)) > > print(plot) > > I believe there may be a way to use expand_range to fix this (I think > I read about it somewhere), but I do not seem to find out how. > I have searched the ggplot help and > the archives, but cannot find the answer to this issue. > I would really appreciate if anyone could give me a pointer. > > I am using R2.6.0 (patched) on Windows > > Thanks, > Pedro > > ______________________________________________ > 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. > -- 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.
