Hitters {vcd}R Documentation

Hitters

Description

This data set is deduced from the Baseball fielding data set: fielding performance basically includes the numbers of Errors, Putouts and Assists made by each player. In order to reduce the number of observations, the data has been compressed by calculating the mean number of errors, putouts and assists for each team and for only 6 positions (1B, 2B, 3B, C, OF, SS and UT). In addition, each of these three variables has been scaled to a common range by dividing each variable by the maximum of the variable.

Usage

data(Hitters)

Format

A data frame with 154 observations and 4 variables.

Positions
factor indicating the field position (1B=first baseman, 2B=second baseman, 3B=third baseman, C=catcher, OF=outfielder, SS=Short Stop, UT=Utility Players),
Putouts
occur when a fielder causes an oppsing player to be tagged or fored out,
Assists
are credited to other fielders involved in making that putout, and
Errors
count the errors made by a player.

Source

SAS System for Statistical Graphics, First Edition, P. A2.3

References

M. Friendly (2000), Visualizing Categorical Data. SAS Institute, Cary, NC.

Examples

data(Hitters)
attach(Hitters)

colors <- c("black","red","green","blue","red","black","blue")
pch <- substr(levels(Positions), 1, 1)
ternaryplot(
            Hitters[,2:4],
            pch = as.character(Positions),
            col = colors[as.numeric(Positions)],
            main = "Baseball Hitters Data"
            )
legend(
       0.7, 0.85,
       legend = c("POSITION(S)", levels(Positions)),
       pch = c("", pch),
       col = c(NA, colors)
       )

  detach(Hitters)

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