Automatically create a ggplot for objects obtained from fit_gam()

Takes an object produced by fit_gam(), and plots the fitted GAM.

Usage

# S3 method for class 'fitgam'
autoplot(
  object,
  conf_int = FALSE,
  color_gam = "steelblue",
  show_observations = FALSE,
  x_stepsize = NULL,
  size_points = 1,
  color_points = "black",
  rotate_labels = FALSE,
  remove_outliers = NULL,
  ...
)

Arguments

object: fitgam object produced by fit_gam()
conf_int: determines whether 95 percent confidence intervals will be plotted. The default is conf_int = FALSE.
color_gam: a color can be specified either by name (e.g.: "red") or by hexadecimal code (e.g. : "#FF1234") (default is "steelblue")
show_observations: add observed frequency/severity points for each level of the variable for which tariff classes are constructed
x_stepsize: set step size for labels horizontal axis
size_points: size for points (1 is default)
color_points: change the color of the points in the graph ("black" is default)
rotate_labels: rotate x-labels 45 degrees (this might be helpful for overlapping x-labels)
remove_outliers: do not show observations above this number in the plot. This might be helpful for outliers.
...: other plotting parameters to affect the plot

Value

a ggplot object

Author

Martin Haringa

Examples

if (FALSE) { # \dontrun{
library(ggplot2)
library(dplyr)
fit_gam(MTPL, nclaims = nclaims, x = age_policyholder,
        exposure = exposure) |>
   autoplot(show_observations = TRUE)
} # }