Adding confidence intervals to barplots

This layer adds confidence intervals to barplots, such as those produced by factor effects GAM.

l_ciBar(level = 0.95, mul = NULL, ...)

Arguments

level	the level of the confidence intervals (e.g. 0.9 means 90% intervals).
mul	number multiplied by the standard errors when calculating standard error curves. By default `NULL`, if set to a positive number it will over-ride `level`.
...	graphical arguments to be passed to `ggplot2::geom_errorbar`.

An object of class gamLayer.