Add a drawing tool — add_sketch • arcgisviz

Hands the reader tools to draw with. What they draw arrives in Shiny as input$<output_id>$sketch, which arc_sf() turns into an sf object.

Usage

add_sketch(
  map,
  position = NULL,
  expand = FALSE,
  tools = NULL,
  creation_mode = NULL,
  layout = 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.
tools: default NULL. Defines which tools are offered, any of "point", "polyline", "polygon", "rectangle", "circle", "multipoint", "freehandPolyline", and "freehandPolygon".
creation_mode: default NULL. Defines what happens after a shape is finished, one of "single", "continuous", or "update".
layout: default NULL. Defines the toolbar direction, "vertical" or "horizontal".
...: 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_sketch(tools = c("polygon", "rectangle"))