panel.densityplot          package:lattice          R Documentation

Default Panel Function for densityplot

Description:

     This is the default panel function for 'densityplot'.

Usage:

     panel.densityplot(x, darg, plot.points = "jitter", ref = FALSE,
                       groups = NULL, weights = NULL,
                       jitter.amount, type, ...)

Arguments:

       x: data points for which density is to be estimated 

    darg: list of arguments to be passed to the 'density' function.
          Typically, this should be a list with zero or more of the
          following components : 'bw', 'adjust', 'kernel', 'window',
          'width', 'give.Rkern', 'n', 'from', 'to', 'cut', 'na.rm' (see
          'density' for details) 

plot.points: logical specifying whether or not the data points should
          be plotted along with the estimated density.  Alternatively,
          a character string specifying how the points should be
          plotted.  Meaningful values are '"rug"', in which case
          'panel.rug' is used to plot a 'rug', and '"jitter"', in which
          case the points are jittered vertically to better distinguish
          overlapping points. 

     ref: logical, whether to draw x-axis 

  groups: an optional grouping variable.  If present, 'panel.superpose'
          will be used instead to display each subgroup 

 weights: numeric vector of weights for the density calculations.  If
          this is specified, the '...' part must also include a
          'subscripts' argument that matches the weights to 'x'.  

jitter.amount: when 'plot.points="jitter"', the value to use as the
          'amount' argument to 'jitter'. 

    type: 'type' argument used to plot points, if requested. This is
          not expected to be useful, it is available mostly to protect
          a 'type' argument, if specified, from affecting the density
          curve. 

     ...: extra graphical parameters.  Note that additional arguments
          to 'panel.rug' cannot be passed on through
          'panel.densityplot'. 

Author(s):

     Deepayan Sarkar Deepayan.Sarkar@R-project.org

See Also:

     'densityplot', 'jitter'

