Italian olive oils data set, as used in Graphics of Large Datasets: Visualizing a Million, by Antony Unwin, Martin Theus and Heike Hofmann, Springer, 2006. Included here with permission of Dr. Martin Theus.
Heights, weights, ages etc. of major league baseball players. A new variable has been added, consolidating positions into Infielders, Outfielders, Catchers and Pitchers.
Similar to jitter, but only generating values in (0,1). A typical example of use is for an age variable, which in many data sets is truncated to the lowest integer.
Performs parametric regression model fit diagnostics, based on freqparcoord. One axis is the "divergences," the differences beween the parametric and nonparametric estimates of the population regression function, while the other axes are the predictor variables. Note that the divergences are NOT the parametric model residuals, e.g. differences between fitted model values and response ("Y") values.
This data set is adapted from the Adult data from the UCI Machine Learning Repository, which was in turn adapted from Census data on adult incomes and other demographic variables. The UCI data is used here with permission from Ronny Kohavi.
providing 
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