Plot a chain ladder fit

Visualise an object of class "CLFit".

Two plot types are supported:

• "projection": observed and projected cumulative values by cohort over development periods. When method = "mack", optional confidence bands are drawn using se_proj.

• "reserve": reserve summary by cohort with optional error bars. Only available when method = "mack".

Usage

# S3 method for class 'CLFit'
plot(
  x,
  type = c("projection", "reserve"),
  conf_level = 0.95,
  show_interval = TRUE,
  amount_divisor = 1e+08,
  scales = c("fixed", "free_y", "free_x", "free"),
  theme = c("view", "save", "shiny"),
  nrow = NULL,
  ncol = NULL,
  ...
)

Arguments

x

An object of class "CLFit".

type

Plot type. One of "projection" or "reserve".

conf_level

Confidence level for interval display. Default is 0.95. Only used when method = "mack".

show_interval

Logical; if TRUE, show normal-approximation confidence intervals. Default is TRUE. Silently ignored when method = "basic".

amount_divisor

Numeric scaling factor for y-axis labels of amount variables. Default is 1e8.

scales

Facet scale argument passed to ggplot2::facet_wrap(). One of "fixed", "free", "free_x", or "free_y".

theme

A string passed to .switch_theme().

nrow, ncol

Number of rows and columns for ggplot2::facet_wrap().

...

Additional arguments passed to .switch_theme().

Value

A ggplot object.