| panel.superpose {lattice} | R Documentation |
This is an useful panel function for trellis displays. Uses a grouping
variable, plotting the x and y variables with different
graphical properties for each distinct value of the grouping variable.
panel.superpose(x, y, subscripts, groups, type="p", ...) panel.superpose.2(x, y, subscripts, groups, type="p", ...)
x,y |
coordinates of the points to be displayed |
subscripts |
subscripts giving indices in original data frame |
groups |
a grouping variable. Different graphical parameters
will be used for each distinct value of groups. The default
graphical parameters are obtained from superpose.symbol and
superpose.line using trellis.par.get
|
type |
character vector specifying what should be drawn for each
group. See panel.xyplot for details of what the values
can be.
The 2 functions panel.superpose and panel.superpose.2
differ only in the way the type argument is interpreted. For
the former, the interpretation is the same as for
panel.xyplot for each of the unique groups. For the latter, the
type vector is replicated to be as long as the number of
unique values in groups, and the points corresponding to the
different groups are plotted according to the corresponding type.
See xyplot documentation for an example.
|
... |
other arguments (mostly graphical parameters, replicated
to be as long as the number of groups), ultimately passed down to
panel.xyplot. In particular, colour can be specified using 3
arguments (col, col.line, col.symbol), as in
panel.xyplot.
|
Deepayan Sarkar deepayan@stat.wisc.edu
(panel.superpose.2 contributed by Neil Klepeis)