Add a navigation control — add

The map's buttons: zoom in and out, return to the starting view, reorient north, fill the screen, and find the reader. They take no arguments beyond where they sit.

Usage

add_zoom(map, position = NULL, layout = NULL, visual_scale = NULL, ...)

add_home(map, position = NULL, visual_scale = NULL, ...)

add_compass(map, position = NULL, visual_scale = NULL, ...)

add_fullscreen(map, position = NULL, visual_scale = NULL, ...)

add_locate(map, position = NULL, scale = NULL, visual_scale = NULL, ...)

add_track(map, position = NULL, scale = NULL, visual_scale = NULL, ...)

Arguments

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.
layout: default NULL. Defines whether the two zoom buttons stack, "vertical" or "horizontal".
visual_scale: default NULL. Defines the button's size relative to its default, as a multiplier.
...: Named properties of the component itself, written either snake_case or camelCase. map_widgets() lists what each one takes.
scale: default NULL. Defines the scale the map zooms to when the reader is found.

Value

map, with the widget added.

Details

add_locate() moves the map to the reader's position once; add_track() follows it as it changes. Both ask the browser for permission, and both need a secure context - https:// or localhost.

Examples

arc_map() |>
  add_zoom(layout = "horizontal") |>
  add_home() |>
  add_compass()