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lattice (version 0.17-25)

panel.barchart: Default Panel Function for barchart

Description

Default panel function for barchart.

Usage

panel.barchart(x, y, box.ratio = 1, box.width,
               horizontal = TRUE,
               origin = NULL, reference = TRUE,
               stack = FALSE,
               groups = NULL, 
               col = if (is.null(groups)) plot.polygon$col
                     else superpose.polygon$col,
               border = if (is.null(groups)) plot.polygon$border
                        else superpose.polygon$border,
               lty = if (is.null(groups)) plot.polygon$lty
                     else superpose.polygon$lty, 
               lwd = if (is.null(groups)) plot.polygon$lwd
                     else superpose.polygon$lwd,
               ...)

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
box.width
thickness of bars in absolute units; overrides box.ratio. Useful for specifying thickness when the categorical variable is not a factor, as use of box.ratio alone cannot achieve a thickness greater than 1.
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
origin
the origin for 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 the left (or bottom) end of a panel. This
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, border, lty, lwd
Graphical parameters for the bars. By default, the trellis parameter plot.polygon is used if there is no grouping variable, otherwise superpose.polygon is used. col gives the fill color, border
...
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.

See Also

barchart