You can use the updateusr function in the TeachingDemos package to get them to match.
Sent from my iPod On Jan 18, 2011, at 10:05 AM, "Andy Aldersley" <ajalders...@hotmail.co.uk> wrote: > > > > > > Hello all, > Hoping that there is a fairly simple solution to my query... > I'm trying to overlay a line plot of some data onto a barplot of different > data. The y-axes are different for each set of data but the x-axes are the > same (1:12, corresponding with 12 months of observations). The problem I'm > having is that the centre of the bars and the points on line don't match up, > which is making the whole thing look untidy. I'm wondering if there is a way > for me to specify the positions of the centre of each bar on the graph. The > code I have is as follows: > xvals <- barplot(wetMeans[,i], yaxt='n', axisnames=F, xlab='', ylab='', > main=names[i], border=F, cex.main=0.7)par(new=T)plot(burnMeans[,i], yaxt='n', > xlab='', ylab='', type='b', cex=1, pch=16, lty=44, col='black', lwd=1.5) > As you can see I have suppressed the y-axis so this isn't a problem.I have > also tried using the barp function in the plotrix package. This solved the > problem of centring the bars on the graph, but when I overlay the line it > seems to use different tick points on the x-axis. Again, I'm not sure why > this is but if there is a quick fix that would be much appreciated. > library(plotrix)xvals <- barp(wetMeans[,i], xlab='', ylab='', main=names[i], > col='grey')par(new=T)plot(burnMeans[,i], yaxt='n', xlab='', ylab='', > type='b', cex=1, pch=16, lty=44, col='black', lwd=1.5) > I get the same result even if I suppress the x-axis in the plot command. > Many thanks in advance, > Andy > > > > > > [[alternative HTML version deleted]] > > ______________________________________________ > 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. ______________________________________________ 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.
