Select features by drawing on the map — arc_draw

Hands the reader a drawing tool. Whatever the shape they draw covers becomes the selection, which arrives back as input$<output_id>$selection the same way set_selection()'s does. The tool is live from the moment this is called and is put away once the shape is finished.

Usage

arc_draw_selection(proxy, tool = "rectangle", mode = "replace", layer = NULL)

Arguments

proxy: Defines which arc_map_proxy() to draw on.
tool: default "rectangle". Defines what the reader draws, one of "rectangle", "polygon", "lasso", "circle", or "point".
mode: default "replace". Defines what the drawn shape does to the existing selection, one of "replace", "add", or "remove".
layer: default NULL. Defines which layers can be selected in, by name. NULL means every layer on the map.

Value

proxy, invisibly.

Examples

if (interactive()) {
  arc_map_proxy("map") |>
    arc_draw_selection(tool = "lasso")
}