제목
CG_Area — Calculates the area of a geometry
요약
double precision CG_Area( geometry geom );
설명
Calculates the area of a geometry.
Performed by the SFCGAL module
![[참고]](../images/note.png)
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NOTE: this function returns a double precision value representing the area. |
Availability: 3.5.0
This method needs SFCGAL backend.
도형 예시
Code
SELECT CG_Area('Polygon ((0 0,0 5,5 5,5 0,0 0),(1 1,2 1,2 2,1 2,1 1),(3 3,4 3,4 4,3 4,3 3))');
래스터 출력
23
Figure