R: Plot an Object of the "Psi Function" Class

plot-methods {robustbase} | R Documentation

## Plot an Object of the "Psi Function" Class

### Description

The `plot` method objects of class `psi_func` simply visualizes the ρ(), ψ(), and weight functions and their derivatives.

### Usage

    ## S4 method for signature 'psi_func'
    plot(x, y,
         which = c("rho", "psi", "Dpsi", "wgt", "Dwgt"),
         main = "full",
         col = c("black", "red3", "blue3", "dark green", "light green"),
         leg.loc = "right", ...)

### Arguments

`x` | object of class `psi_func` to be plotted
`y` | (optional) vector of abscissa values (to plot object at).
`which` | `character` vector of slots to be included in plot; by default, all of the slots are included
`main` | string or logical indicating the kind of plot title; either `"full"`, `"short"` or `FALSE` which chooses a full, a short or no main title at all.

`col` | colors to be used for the different slots
`leg.loc` | legend placement, see also `x` argument of `legend`
`...` | passed to `matplot`

### Note

An earlier version had argument `shortMain` which is deprecated now. Use `main = "short"` instead of `shortMain = TRUE`.

If you want to specify your own title, use `main=FALSE`, and a subsequent `title(...)` call.

### See Also

`psiFunc()` and the `class` `psi_func`.

### Examples

    plot(huberPsi)
    plot(huberPsi, which=c("psi", "Dpsi", "wgt"),
         main="short", leg = "topleft")

    plot(hampelPsi)
    ## Plotting aspect ratio = 1:1 :
    plot(hampelPsi, asp=1, main="short",
         which = c("psi", "Dpsi", "wgt", "Dwgt"))

[Package robustbase version 0.93-6 Index]