Area

Calculates the area of the input GeoJSON object.

Example

from turfpy.measurement import area
from geojson import Feature, FeatureCollection

geometry_1 = {
    "coordinates": [[[0, 0], [0, 10], [10, 10], [10, 0], [0, 0]]],
    "type": "Polygon",
}
geometry_2 = {
    "coordinates": [
        [[2.38, 57.322], [23.194, -20.28], [-120.43, 19.15], [2.38, 57.322]]
    ],
    "type": "Polygon",
}
feature_1 = Feature(geometry=geometry_1)
feature_2 = Feature(geometry=geometry_2)
feature_collection = FeatureCollection([feature_1, feature_2])

area(feature_collection)

56837434206665.02

Interactive Example

from turfpy.measurement import area
from geojson import Feature, FeatureCollection
from ipyleaflet import Map, GeoJSON, basemaps, basemap_to_tiles, WidgetControl
from ipywidgets import HTML

geometry_1 = {
    "coordinates": [[[0, 0], [0, 10], [10, 10], [10, 0], [0, 0]]],
    "type": "Polygon",
}
geometry_2 = {
    "coordinates": [
        [[2.38, 57.322], [23.194, -20.28], [-120.43, 19.15], [2.38, 57.322]]
    ],
    "type": "Polygon",
}
feature_1 = Feature(geometry=geometry_1)
feature_2 = Feature(geometry=geometry_2)
feature_collection = FeatureCollection([feature_1, feature_2])
geo_json = GeoJSON(data=feature_collection)
watercolor = basemap_to_tiles(basemaps.Stamen.Watercolor)

m = Map(layers=(watercolor,), center=[20.04303061200023, -11.832275390625002], zoom=2)

m.add_layer(geo_json)

html = HTML()
html.layout.margin = "0px 20px 10px 20px"
html.value = """
        <h4>Area in meter sqaure: {}</h4>
        <h4>measurement.area(feature_collection)</h4>
    """.format(
    area(feature_collection)
)
control = WidgetControl(widget=html, position="topright")
m.add_control(control)
m