# R: Default Panel Function for bwplot

panel.bwplot {lattice} | R Documentation

## Default Panel Function for bwplot

### Description

This is the default panel function for `bwplot`.

### Usage

    panel.bwplot(x, y, box.ratio = 1,
                 horizontal = TRUE,
                 pch, col, cex,
                 font, fontfamily, fontface,
                 fill, varwidth = FALSE,
                 ...,
                 levels.fos,
                 stats = boxplot.stats,
                 coef = 1.5,
                 do.out = TRUE)

### Arguments

`x, y` | numeric vector or factor. Boxplots drawn for each unique value of `y` (`x`) if `horizontal` is `TRUE` (`FALSE`)
`box.ratio` | ratio of box height to inter box space
`horizontal` | logical. If FALSE, the plot is ‘transposed’ in the sense that the behaviours of x and y are switched. x is now the ‘factor’. Interpretation of other arguments change accordingly. See documentation of `bwplot` for a fuller explanation.
`pch, col, cex, font, fontfamily, fontface` | graphical parameters controlling the dot. `pch="|"` is treated specially, by replacing the dot with a line (similar to `boxplot`)
`fill` | color to fill the boxplot
`varwidth` | logical. If TRUE, widths of boxplots are proportional to the number of points used in creating it.
`stats` | a function, defaulting to `boxplot.stats`, that accepts a numeric vector and returns a list similar to the return value of `boxplot.stats`. The function must accept arguments `coef` and `do.out` even if they do not use them (a `...` argument is good enough). This function is used to determine the box and whisker plot.
`coef, do.out` | passed to `stats`
`levels.fos` | numeric values corresponding to positions of the factor or shingle variable. For internal use.
`...` | further arguments, ignored.

### Details

Creates Box and Whisker plot of `x` for every level of `y` (or the reverse if `horizontal=FALSE`). By default, the actual boxplot statistics are calculated using `boxplot.stats`. Note that most arguments controlling the display can be supplied to the high-level `bwplot` call directly. Unlike the traditional analog `boxplot`, notches are not implemented.

Although the graphical parameters for the dot representing the median can be controlled by optional arguments, many others can not. These parameters are obtained from the relevant settings parameters (`"box.rectangle"` for the box, `"box.umbrella"` for the whiskers and `"plot.symbol"` for the outliers).

### Author(s)

Deepayan Sarkar Deepayan.Sarkar@R-project.org

### See Also

`bwplot`, `boxplot.stats`

### Examples

    bwplot(voice.part ~ height, data = singer,
           xlab = "Height (inches)",
           panel = function(...) {
               panel.grid(v = -1, h = 0)
               panel.bwplot(...)
           },
           par.settings = list(plot.symbol = list(pch = 4)))

[Package lattice version 0.16-5 Index]