Geodetic Areas
Compute areas of geodesic polygons on the Earth, using the default ellipsoidal model.
Area of a geodesic triangle on the Earth.
In[1]:=
polygon = Polygon[GeoPosition[{{0, 0}, {0, 90}, {90, 0}}]]Out[1]=
In[2]:=
GeoArea[polygon]Out[2]=
In[3]:=
GeoArea[polygon];
% == GeoArea["World"]/8Out[3]=
Area of a continent.
In[4]:=
polygon = EntityValue[Entity["GeographicRegion", "Africa"], "Polygon"]Out[4]=
In[5]:=
GeoArea[polygon]Out[5]=
Land area in the world.
In[6]:=
polygon = EntityValue[Entity["GeographicRegion", "World"], "Polygon"];In[7]:=
GeoArea[polygon]Out[7]=
Less than 29% of the Earth's surface is land.
In[8]:=
GeoArea[polygon];
%/GeoArea["World"]Out[8]=
