Violin Plots for Matlab
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example.png add README Jun 9, 2016

Violin Plots for Matlab

A violin plot is an easy to read substitute for a box plot that replaces the box shape with a kernel density estimate of the data, and optionally overlays the data points itself. The original boxplot shape is still included as a grey box/line in the center of the violin.

Violin plots are a superset of box plots, and give a much richer understanding of the data distribution, while not taking more space. You will be able to instantly spot too-sparse data, or multi-modal distributions, which could go unnoticed in boxplots.

violinplot is meant as a direct substitute for boxplot (excluding named arguments). Additional constructor parameters include the width of the plot, the bandwidth of the kernel density estimation, and the X-axis position of the violin plot.

For more information about violin plots, read "Violin plots: a box plot-density trace synergism" by J. L. Hintze and R. D. Nelson in The American Statistician, vol. 52, no. 2, pp. 181-184, 1998 (DOI: 10.2307/2685478).

load carbig MPG Origin
Origin = cellstr(Origin);
vs = violinplot(MPG, Origin);
ylabel('Fuel Economy in MPG');
xlim([0.5, 7.5]);

example image