(This article was first published on

**OUseful.Info, the blog... » Rstats**, and kindly contributed to R-bloggers)I’ve been doodling some chart in R/ggplot using geom_text() to generate a labelled scatterplot.

The chart actually builds up several layers using different datasets, so it’s not obvious how to set the ranges cleanly: I know the lower bound I want for the y-axis (y=0), but I want to let the upper bound float.

There’s also an issue with the labels overflowing the edges left and right.

So here are a couple of lines to make everything better (chart is in *g*):

#Find the current ymax value for upper bound #(via http://stackoverflow.com/questions/7705345/how-can-i-extract-plot-axes-ranges-for-a-ggplot2-object#comment24184444_8167461 ) gy=ggplot_build(g)$panel$ranges[[1]]$y.range[2] g=g+ylim(0,gy) #Handle the overflow by expanding the x-axis g=g+scale_x_continuous(expand=c(0.1,0))

To

**leave a comment**for the author, please follow the link and comment on their blog:**OUseful.Info, the blog... » Rstats**.R-bloggers.com offers

**daily e-mail updates**about R news and tutorials on topics such as: Data science, Big Data, R jobs, visualization (ggplot2, Boxplots, maps, animation), programming (RStudio, Sweave, LaTeX, SQL, Eclipse, git, hadoop, Web Scraping) statistics (regression, PCA, time series, trading) and more...