prepanel.default           package:lattice           R Documentation

Default Prepanel Functions

Description:

     These prepanel functions are used as fallback defaults in various
     high level plot functions in Lattice.  These are rarely useful to
     normal users but may be helpful in developing new displays.

Usage:

     prepanel.default.bwplot(x, y, horizontal, nlevels, origin, stack, ...)
     prepanel.default.histogram(x, breaks, equal.widths, type, nint, ...)
     prepanel.default.qq(x, y, ...)
     prepanel.default.xyplot(x, y, type, subscripts, groups, ...)
     prepanel.default.cloud(perspective, distance,
                            xlim, ylim, zlim,
                            screen = list(z = 40, x = -60),
                            R.mat = diag(4),
                            aspect = c(1, 1), panel.aspect = 1,
                            ..., zoom = 0.8)
     prepanel.default.levelplot(x, y, subscripts, ...)
     prepanel.default.qqmath(x, f.value, distribution, qtype,
                             groups, subscripts, ...)
     prepanel.default.densityplot(x, darg, groups, weights, subscripts, ...)
     prepanel.default.parallel(x, y, z, ..., horizontal.axis)
     prepanel.default.splom(z, ...)

Arguments:

    x, y: x and y values, numeric or factor

horizontal: logical, applicable when one of the variables is to be
          treated as categorical (factor or shingle). 

horizontal.axis: logical indicating whether the parallel axes should be
          laid out horizontally ('TRUE') or vertically ('FALSE'). 

 nlevels: number of levels of such a categorical variable. 

origin, stack: for barcharts or the 'type="h"' plot type

breaks, equal.widths, type, nint: details of histogram calculations. 
          'type' has a different meaning in 'prepanel.default.xyplot'
          (see 'panel.xyplot') 

groups, subscripts: See 'xyplot'.  Whenever appropriate, calculations
          are done separately for each group and then combined.  

 weights: numeric vector of weights for the density calculations.  If
          this is specified, it is subsetted by 'subscripts' to match
          it to 'x'.  

perspective, distance, xlim, ylim, zlim, screen, R.mat, aspect,
panel.aspect, zoom: 
          see 'panel.cloud'

f.value, distribution: see 'panel.qqmath' 

    darg: list of arguments passed to 'density'

       z: see 'panel.parallel' and 'panel.pairs' 

   qtype: type of 'quantile'

     ...: other arguments, usually ignored 

Value:

     A list with components 'xlim', 'ylim', 'dx' and 'dy', and possibly
     'xat' and 'yat', the first two being used to calculate panel axes
     limits, the last two for banking computations.  The form of these
     components are described in the help page for 'xyplot'.

Author(s):

     Deepayan Sarkar Deepayan.Sarkar@R-project.org

See Also:

     'xyplot', 'banking', 'Lattice'. See documentation of corresponding
     panel functions for more details about the arguments.

