F_2_panel.spline {lattice} | R Documentation |
A predefined panel function that can be used to add a spline smooth based on the provided data.
panel.spline(x, y, npoints = 101, lwd = plot.line$lwd, lty = plot.line$lty, col, col.line = plot.line$col, type, horizontal = FALSE, ..., keep.data = FALSE, identifier = "spline")
x, y |
Variables defining the data to be used. |
npoints |
The number of equally spaced points within the range of the predictor at which the fitted model is evaluated for plotting. |
lwd, lty, col, col.line |
Graphical parameters for the added
line. col.line overrides col . |
type |
Ignored. The argument is present only to make sure that
an explicitly specified type argument (perhaps meant for
another function) does not affect the display. |
horizontal |
A logical flag controlling which variable is to be treated as the
predictor (by default x ) and which as the response (by
default y ). If TRUE , the plot is ‘transposed’
in the sense that y becomes the predictor and x the
response. (The name ‘horizontal’ may seem an odd choice for
this argument, and originates from similar usage in
bwplot ).
|
keep.data |
Passed on to smooth.spline . The
default here (FALSE ) is different, and results in the
original data not being retained in the fitted spline model. It may
be useful to set this to TRUE if the return value of
panel.spline , which is the fitted model as returned by
smooth.spline , is to be used for subsequent
computations. |
... |
Extra arguments, passed on to
smooth.spline and panel.lines as
appropriate. |
identifier |
A character string that is prepended to the names of grobs that are created by this panel function. |
The fitted model as returned by smooth.spline
.
Deepayan Sarkar Deepayan.Sarkar@R-project.org
Lattice,
smooth.spline
,
prepanel.spline