Your multipolygon is simply two rings of 3 by 3. Defining them
as multipolygon does do nothing for intersection, so the area is 18
(which is 9 + 9). You need to look up what intersection means.
For me, the intersection of the 2 polygons is the common area,
which is 4.
GL
[EMAIL PROTECTED] wrote:
Hi,
I'd like to compute the total area of polygon that intersects with another
polygon
Polygon(0 0,0 3,3 3,3 0,0 0)
Polygon(1 1,4 1,4 4,1 4,1 1)
The total area is 14 but I don't find a solution to compute this value.
e.g. SELECT Area(GeomFromText('MultiPolygon( ((0 0,0 3,3 3,3 0,0 0)),((1 1,1 4,4
4,4 1,1 1)))')) --> 18
Have you any idea ?
Thank,
Olivier.
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