R: Panel Function to Add a LOESS Smooth

F_2_panel.loess {lattice} | R Documentation

## Panel Function to Add a LOESS Smooth

### Description

A predefined panel function that can be used to add a LOESS smooth based on the provided data.

### Usage

    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")

### Arguments

`x, y` | Variables defining the data to be used.
`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.
`span, degree, family, evaluation` | Arguments to `loess.smooth`, for which `panel.loess` is essentially a wrapper.
`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`).
`...` | Extra arguments, passed on to `panel.lines`.
`identifier` | A character string that is prepended to the names of grobs that are created by this panel function.

### Value

The object returned by `loess.smooth`.

### Author(s)

Deepayan Sarkar Deepayan.Sarkar@R-project.org

### See Also

Lattice, `loess.smooth`, `prepanel.loess`

[Package lattice version 0.20-29 Index]