barchart
.panel.barchart(x, y, box.ratio = 1,
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,
...)
barchart
call
directly.barchart