Hi, I have a table with a geometry LineString. This Linestrings are a pseudo-copy of the boundaries of some polygon geometries hosted in another table.
I say "pseudo-copy" because the geometry is identical but the versus can be changed (respect to the polygons). I need to fill a field of the linestrings table with the versus of the line. The versus of the linestring if defined like this: "1" if starting from first vertex of the line and going forward last vertex , the polygon is on the left, "0" if the polygon is on the rigth. I like to fill this field with a sql insert, but I don't understand if there really a method to understand the versus of the line respect to the polygons. Many thx, Andrea Peri. -- ----------------- Andrea Peri . . . . . . . . . qwerty àèìòù -----------------
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