27 posts with this tag
Part of the series Plotting in R With Ggplot2 1. Line plots in ggplot2 2. Area plots in ggplot2 3. Bar plots in ggplot2 4. Stacked bar plots in ggplot2 5. Scatterplots in ggplot2 6. Weighted scatterplots in ggplot2 7. Histograms in ggplot2 8. …
One of the things I really missed when I moved from Stata to R was how easy it was to do group operations; that is, being able to apply summary statistics by levels of a variable or variables in a dataset. Fortunately for me, I just needed a bit of …