Wednesday, February 5, 2014

ggPlot2: Histogram with jittered stripchart

Here is an example of a Histogram plot, with a stripchart (vertically jittered) along the x side of the plot.

Alternatively, using the geom_rug function:

Of course this simplicistic method need to be adjusted in vertical position of the stripchart or rugchart (y=-2, here), and the relative proportion of points jittering.

Sunday, February 2, 2014

Boxplot with mean and standard deviation in ggPlot2 (plus Jitter)

When you create a boxplot in R, it automatically computes median, first and third quartile ("hinges") and 95% confidence interval of median ("notches").

But we would like to change the default values of boxplot graphics with the mean, the mean + standard deviation, the mean - S.D., the min and the max values.
Here is an example solved using ggplot2 package. Plus here are represented points (the single values) jittered horizontally.