This panel function is defined to plot confidence intervals in a multi-panel
lattice display. Note, both lower and upper must be passed directly to
xyplot
as they will be passed down to the prepanel function.
panel.ci(x, y, subscripts, lower, upper, zl)
Data from the call to xyplot
.
Variable used to created the juxtaposed panels.
95% lower and upper bounds of y
.
Logical indicating whether or not a horizontal dotted line at zero is desired.