plot.nffGroupedData: Plot an nffGroupedData Object

Description

A Trellis dot-plot of the response by group is generated. If outer variables are specified, the combination of their levels are used to determine the panels of the Trellis display. The Trellis function dotplot is used.

Usage

## S3 method for class 'nffGroupedData':
plot(x, outer, inner, innerGroups, xlab, ylab, strip, panel, key,
     grid, \dots)

Arguments

an object inheriting from class nffGroupedData, representing a groupedData object with a factor primary covariate and a single grouping level.

outer

an optional logical value or one-sided formula, indicating covariates that are outer to the grouping factor, which are used to determine the panels of the Trellis plot. If equal to TRUE, attr(object, "outer") is used to

inner

an optional logical value or one-sided formula, indicating a covariate that is inner to the grouping factor, which is used to associate points within each panel of the Trellis plot. If equal to TRUE, attr(object, "inner")

innerGroups

an optional one-sided formula specifying a factor to be used for grouping the levels of the inner covariate. Different colors, or symbols, are used for each level of the innerGroups factor. Default is NULL,

xlab

an optional character string with the label for the horizontal axis. Default is the y elements of

attr(object,
     "labels")

and attr(object, "units") pasted together.

ylab

an optional character string with the label for the vertical axis. Default is the grouping factor name.

strip

an optional function passed as the strip argument to the dotplot function. Default is

strip.default(..., style
     = 1)

(see trellis.args).

panel

an optional function used to generate the individual panels in the Trellis display, passed as the panel argument to the dotplot function.

key

an optional logical function or function. If TRUE and either inner or innerGroups are non-NULL, a legend for the different inner (innerGroups) levels is included at th

grid

this argument is included for consistency with the plot.nfnGroupedData method calling sequence. It is ignored in this method function.

...

optional arguments passed to the dotplot function.

Value

a Trellis dot-plot of the response by group.

References

Bates, D.M. and Pinheiro, J.C. (1997), "Software Design for Longitudinal Data", in "Modelling Longitudinal and Spatially Correlated Data: Methods, Applications and Future Directions", T.G. Gregoire (ed.), Springer-Verlag, New York.

Pinheiro, J.C. and Bates, D.M. (1997) "Future Directions in Mixed-Effects Software: Design of NLME 3.0" available at http://franz.stat.wisc.edu/pub/NLME.

Examples

Run this code

plot(Machines)
plot(Machines, inner = TRUE)