R: Plot diagnostics for a confint object

plot.confint {chandwich}

R Documentation

Plot diagnostics for a confint object

Description

plot method for class "confint". Plots the (profile) loglikelihood for a parameter using the values calculated by conf_intervals. Up to 4 different types of loglikelihood (see the argument type to the function returned by adjust_loglik) may be superimposed on the same plot. By default (add_lines = TRUE) the confidence limits calculated in conf_intervals are indicated on the plot .

Usage

## S3 method for class 'confint'
plot(
  x,
  y = NULL,
  y2 = NULL,
  y3 = NULL,
  which_par = x$which_pars[1],
  conf = x$conf,
  add_lines = TRUE,
  legend = any(c(!is.null(y), !is.null(y2), !is.null(y3))),
  legend_pos = "topleft",
  ...
)

Arguments

`x`, `y`, `y2`, `y3`	objects of class `"confint"`, results of calls to `conf_intervals` for a common model. A (profile) loglikelihood will be plotted for each object.
`which_par`	A scalar specifying the parameter for which the plot is produced. Can be either a numeric scalar, specifying index of the component of the full parameter vector, or a character scalar parameter name. The former must be in `x$which_pars`, the latter must be in `names(x$which_pars)`.
`conf`	A numeric vector of values in (0, 100). If `add_lines = TRUE` then a horizontal line is added for each value in `conf`. If `conf` is not supplied then the value stored in `x$conf` is used.
`add_lines`	A logical scalar. Whether or not to add horizontal lines to the plot to identify the confidence limits. If there is only one input `"confint"` object then the values of the confidence limits will be added to the horizontal axis.
`legend`	A logical scalar or a character vector. If this is supplied then a legend is added to the plot. If `legend` is a character vector then it is used as the argument `legend` to `legend`. Otherwise, i.e. if `legend = TRUE` then the component `type` of the input object(s) `x, y, y2, y3` are used.
`legend_pos`	The position of the legend (if required) specified using the argument `x` in `legend`.
`...`	Additional arguments passed to `matplot` or `legend`. The arguments `col`, `lty` and `lwd` will be used (in a consistent way) by both `matplot` and `legend`.

Value

Nothing is returned.

Examples