Panel Function for Box and Whisker Plots (Box Plots)

USAGE:

panel.bwplot(x, y, box.ratio=1, ...) 
panel.bd.bwplot(x, y, ...) 

ARGUMENTS:

x
contains the quartiles of each group of data to be plotted. (For panel.bwplot, the argument x is the raw data, and the panel function computes the quartiles).
y
vector of vertical coordinates of data points (group numbers), ranging from 1 to the number of groups.
box.ratio
the ratio of box width to inter-box space.
...
other arguments including graphical parameters. The parameters, pch, font , cex , and col affect the central dot in the middle of the box. Various trellis parameters affect parts of the box plot symbols: box.dot for the central dot, box.rectangle for the rectangular box, box.umbrella for the "whiskers" and "staples", and plot.symbol for the outlier points. See trellis.par.get for more details.

DETAILS:

panel.bd.bwplot is for data produced by the bigdata method of bwplot , while panel.bwplot is for the non-bigdata method. panel.bd.bwplot is available only when the Big Data library is loaded.

SIDE EFFECTS:

This function computes quantiles, extremes, and outliers of x values and draws a horizontal box symbol for each group. When the panel function is called, the horizontal coordinate system has been set up to accommodate the range of the x values; the vertical coordinate system has been set up from .5 to n+.5 if there are n groups of data.

SEE ALSO:

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