从坐标计算矩形面积

Question

如果我有两点（51.9925734,5.65038093），（51.99226769,5.64991222）

我想得到矩形的地球面积

我从其他资源中尝试了此方法：

from area import area
obj_field = {'type':'Polygon','coordinates':[[[51.9925734,5.65038093],
                                     [51.9925734,5.64991222],
                                     [51.99226769,5.64991222],
                                     [51.99226769,5.65038093]]]}
field_area_2 = area(obj_field)
print(f'The total field area is: {field_area_2} square meters')
The total field area is: 1767.018812772391 square meters

但我不确定这是否正确

Answer 1

对于小区域，如您的示例，最简单的方法是将lat/lon坐标转换为UTM。然后可以使用基本数学，如计算矩形的面积，如以下代码段所示：

import utm

a_geo = 51.9925734, 5.65038093
b_geo = 51.99226769, 5.64991222

# Convert lat, lon to utm
a_easting, a_northing, zone, _ = utm.from_latlon(*a_geo)
b_easting, b_northing, _, _ = utm.from_latlon(*b_geo, force_zone_number=zone)

area = abs((a_easting - b_easting) * (a_northing - b_northing))