Why are these results different? The only difference is the coordinate. Seem like the area should be the same.
select st_area(st_buffer(st_setsrid(st_point(-70, 40), 4326)::geography, 10)) AS ex1, st_area(st_buffer(st_setsrid(st_point(-71, 40), 4326)::geography, 10)) AS ex2; ex1 | ex2 ------------------+----------------- 312.338323043769 | 312.17021877505 (1 row)
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select st_area(st_buffer(st_setsrid(st_point(-70, 40), 4326)::geography, 10)) AS ex1, st_area(st_buffer(st_setsrid(st_point(-71, 40), 4326)::geography, 10)) AS ex2; ex1 | ex2 ------------------+----------------- 312.338323043769 | 312.17021877505 (1 row)
أكثر...