prepanel.ci: Prepanel for ciplot

In tactile: New and Extended Plots, Methods, and Panel Functions for 'lattice'

Prepanel for ciplot

Description

Prepanel for ciplot

Usage

prepanel.ci(x, y, lower, upper, subscripts, groups = NULL, ...)

Arguments

x, y	x and y values, numeric or factor
lower	lower confidence limits
upper	upper confidence limits
groups, subscripts	See xyplot. Whenever appropriate, calculations are done separately for each group and then combined.
...	other arguments, usually ignored

Examples

mod <- lm(Petal.Width ~ Petal.Length * Species, data = iris)
newdat <- expand.grid(
  Petal.Length = seq(1, 7, by = 0.1),
  Species = c("setosa", "versicolor", "virginica")
)
pred <- predict(mod, newdat, interval = "confidence")
dd <- cbind(newdat, pred)

xyplot(
  fit ~ Petal.Length,
  groups = Species, data = dd,
  prepanel = prepanel.ci,
  ylab = "Petal Width",
  xlab = "Petal Length",
  lower = dd$lwr, upper = dd$upr, alpha = 0.3,
  panel = function(...) {
    panel.ci(..., grid = TRUE)
    panel.xyplot(type = "l", ...)
  }
)

tactile documentation built on May 31, 2023, 9:47 p.m.