Hello everyone, I have a question about GEOSUnion(). I give value to g1 and g2 like below: GEOSGeom g1 = "POLYGON ((1 3, 1 3, 1 6, 1 6, 1 3))" and GEOSGeom g2 = "POLYGON ((1 3, 1 3, 1 6, 1 6, 1 3))" , but if I make union operation like GEOSGeom g3 = GEOSUnion(g1, g2), it give me result like "GEOMETRYCOLLECTION EMPTY". Does anyone can tell me why?
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