lattice (version 0.19-30)

F_3_prepanel.functions: Useful Prepanel Function for Lattice

Description

These are predefined prepanel functions available in Lattice.

Usage

prepanel.lmline(x, y, ...)
prepanel.qqmathline(x, y = x, distribution = qnorm,
                    probs = c(0.25, 0.75), qtype = 7,
                    groups, subscripts,
                    ...) 
prepanel.loess(x, y, span, degree, family, evaluation,
               horizontal = FALSE, ...)
prepanel.spline(x, y, npoints = 101, 
                horizontal = FALSE, ...,
                keep.data = FALSE)

Value

usually a list with components xlim, ylim, dx and dy, the first two being used to calculate panel axes limits, the last two for banking computations. The form of these components are described under xyplot. There are also several prepanel functions that serve as the default for high level functions, see prepanel.default.xyplot

Details

All these prepanel functions compute the limits to be large enough to contain all points as well as the relevant smooth.

In addition, prepanel.lmline computes the dx and dy such that it reflects the slope of the linear regression line; for prepanel.qqmathline, this is the slope of the line passing through the quantile pairs specified by probs. For prepanel.loess and prepanel.spline, dx and dy reflect the piecewise slopes of the nonlinear smooth.

See Also

Lattice, xyplot, banking, panel.loess, panel.spline.