Add a legend — add_legend • arcgisviz

Draws one entry per layer, reading each layer's renderer - so a map with add_layer(color = ) explains its own colours.

Usage

add_legend(
  map,
  position = NULL,
  expand = FALSE,
  legend_style = NULL,
  card_style_layout = NULL,
  basemap_legend_visible = NULL,
  ...
)

map: Defines which map or arc_map_proxy() to modify.
position: default NULL. Defines which corner it sits in, one of "top-left", "top-right", "bottom-left", "bottom-right", or the direction-aware "top-start", "top-end", "bottom-start", "bottom-end". Each widget has its own default.
expand: default FALSE. Defines whether the widget is collapsed behind a button rather than drawn open. Worth it for the panels - the legend, layer list, basemap gallery - which otherwise cover the map. Collapsed widgets sharing a corner close each other when opened.
legend_style: default NULL. Defines the layout, "classic" or "card".
card_style_layout: default NULL. Defines how cards are arranged when legend_style is "card", "auto", "side-by-side", or "stack".
basemap_legend_visible: default NULL. Defines whether the basemap's own layers get legend entries.
...: Named properties of the component itself, written either snake_case or camelCase. map_widgets() lists what each one takes.

map, with the widget added.

arc_map() |> add_legend(expand = TRUE)