A variation of
panel.dotplot that plots horizontal lines from zero to
the data point.
panel.needle( x, y, horizontal = TRUE, pch = if (is.null(groups)) dot.symbol$pch else sup.symbol$pch, col = if (is.null(groups)) dot.symbol$col else sup.symbol$col, lty = dot.line$lty, lwd = dot.line$lwd, col.line = dot.line$col, levels.fos = NULL, groups = NULL, ... )
variables to be plotted in the panel. Typically y is the 'factor'
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.
locations where reference lines will be drawn
grouping variable (affects graphical parameters)
extra parameters, passed to
panel.xyplot which is
responsible for drawing the foreground points (
draws the background reference lines).
Creates (possibly grouped) needleplot of
y or vice