Panel Function to Add a LOESS Smooth
A predefined panel function that can be used to add a LOESS smooth based on the provided data.
panel.loess(x, y, span = 2/3, degree = 1, family = c("symmetric", "gaussian"), evaluation = 50, lwd, lty, col, col.line, type, horizontal = FALSE, …, identifier = "loess")
- x, y
Variables defining the data to be used.
- lwd, lty, col, col.line
Graphical parameters for the added line.
Ignored. The argument is present only to make sure that an explicitly specified
typeargument (perhaps meant for another function) does not affect the display.
- span, degree, family, evaluation
loess.smooth, for which
panel.loessis essentially a wrapper.
A logical flag controlling which variable is to be treated as the predictor (by default
x) and which as the response (by default
TRUE, the plot is ‘transposed’ in the sense that
ybecomes the predictor and
xthe response. (The name ‘horizontal’ may seem an odd choice for this argument, and originates from similar usage in
Extra arguments, passed on to
A character string that is prepended to the names of grobs that are created by this panel function.
The object returned by