varr | Ricardo Semião

Plots the result of a fevd call.

Usage

ggvar_fevd(
  x,
  series = NULL,
  n.ahead = 10,
  graph_type = "bar",
  args_aes = list(),
  args_type = list(),
  args_labs = list(),
  args_facet = list(),
  ...
)

Arguments

x: A "varest" object to pass to fevd, or, directly, a "varfevd" object.
series: A character vector with series (variables) to consider. Defaults to all (NULL).
n.ahead: An integer. The size of the forecast horizon, passed to fevd. Unused if x is of class varfevd.
graph_type: The ggplot geom used to create the plot: texts_vec.
args_aes: Defines aesthetics to differentiate the data. A named list of aesthetics names (*) – arguments passed to ggplot2::scale_*_manual. See more in the 'Customization' section.
args_type: Arguments passed to the 'geom' chosen in graph_type.
args_labs: Additional arguments passed to labs. If an empty list, will be changed to default values.
args_facet: Additional arguments passed to the faceting engine used.
...: Arguments passed to methods, see the 'Methods' section.

Value

A ggplot.

Details

Customization

The graph can be customized both with the 'static' arguments passed to each layer – using the args_* arguments –, and, if applicable, the 'dynamic' aesthetics – using the args_aes argument.

The args_aes is a list with '* = arguments to scale_*_manual \ elements, where '*' represents the name of an aesthetic to apply to the \ data. View vignette('ggplot2-specs', 'ggplot2') to see the available \ aesthetics.

After built, the result can be further customized as any ggplot, adding or overwriting layers with the ggplot's +. It is useful to understand the data and the mappings coded by the package, using the function get_gg_info.

See vignette('customizing-graphs') for more details.

Methods

The data from x is extracted with the generic function texts_vec. Each class conditions an external function to pass the ... arguments to. Below there is a list with all the currently implemented classes:

Class 'varest': passed to vars::fevd.
Class 'varfevd': passed to nothing.

Examples

ggvar_fevd(vars::VAR(freeny[-2]), n.ahead = 10)
#> Warning: Some aesthetic must have its 'values' defined in `args_aes`. Setting
#> `args_aes$fill$values` to "'ggplot'".

Plot VAR forecast error variance decomposition