turf_area

This function calculates the area of polygons in a layer or sf object.
Note: This function only works with proxy objects as it returns a numeric value to R.

Provides an interface to the 'Mapbox GL JS' (<https://docs.mapbox.com/mapbox-gl-js/guides>)
and the 'MapLibre GL JS' (<https://maplibre.org/maplibre-gl-js/docs/>) interactive mapping libraries to help users
create custom interactive maps in R. Users can create interactive globe visualizations; layer 'sf' objects to create
filled maps, circle maps, 'heatmaps', and three-dimensional graphics; and customize map styles and views. The package
also includes utilities to use 'Mapbox' and 'MapLibre' maps in 'Shiny' web applications.

Kyle Walker

mapgl

Interactive Maps with 'Mapbox GL JS' and 'MapLibre GL JS'

turf_area function

<dl><dt>proxy</dt>
<dd>A mapboxgl_proxy or maplibre_proxy object.</dd>
<dt>layer_id</dt>
<dd>The ID of the layer or source containing the polygons (mutually exclusive with data).</dd>
<dt>data</dt>
<dd>An sf object containing polygons (mutually exclusive with layer_id).</dd>
<dt>input_id</dt>
<dd>Character string specifying the Shiny input ID suffix for storing the area result. Default is "turf_area_result". Result will be available as <code>input[[paste0(map_id, "_turf_", input_id)]]</code>.</dd></dl>

Arguments

Calculate area of geometries — turf_area

<dl>

<dt>proxy</dt>
<dd>A mapboxgl_proxy or maplibre_proxy object.</dd>


<dt>layer_id</dt>
<dd>The ID of the layer or source containing the polygons (mutually exclusive with data).</dd>


<dt>data</dt>
<dd>An sf object containing polygons (mutually exclusive with layer_id).</dd>


<dt>input_id</dt>
<dd>Character string specifying the Shiny input ID suffix for storing the area result. Default is "turf_area_result". Result will be available as <code>input[[paste0(map_id, "_turf_", input_id)]]</code>.</dd>

</dl>

turf_area: Calculate area of geometries

Description

Usage

Value

Arguments