R: Default Panel Function for barchart

panel.barchart {lattice}

R Documentation

Default Panel Function for barchart

Description

Default panel function for barchart.

Usage

panel.barchart(x, y, box.ratio = 1,
               horizontal = TRUE,
               origin = NULL, reference = TRUE,
               stack = FALSE,
               groups = NULL, 
               col = if (is.null(groups)) bar.fill$col else
               regions$col,
               ...)

Arguments

`x`	Extent of Bars. By default, bars start at left of panel, unless `origin` is specified, in which case they start there
`y`	Horizontal location of bars, possibly factor
`box.ratio`	ratio of bar width to inter-bar 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.
`origin`	origin of the bars. For grouped displays with `stack = TRUE`, this argument is ignored and the origin set to 0. Otherwise, defaults to `NULL`, in which case bars start at leftmost end of panel.
`reference`	logical, whether a reference line is to be drawn at the origin
`stack`	logical, relevant when groups is non-null. If `FALSE` (the default), bars for different values of the grouping variable are drawn side by side, otherwise they are stacked.
`groups`	optional grouping variable
`col`	Color of the bars. By default, the trellis parameter `bar.fill` is used if there is no grouping variable, otherwise `regions` is used.
`...`	extra arguments will be accepted but ignored

Details

A barchart is drawn in the panel. Note that most arguments controlling the display can be supplied to the high-level barchart call directly.

Author(s)