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Merge pull request #3341 from nyalldawson/boundary
New method for calculating geometry boundary
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Original file line number | Diff line number | Diff line change |
---|---|---|
@@ -0,0 +1,8 @@ | ||
{ | ||
"name": "boundary", | ||
"type": "function", | ||
"description":"Returns the closure of the combinatorial boundary of the geometry (ie the topological boundary of the geometry). For instance, a polygon geometry will have a boundary consisting of the linestrings for each ring in the polygon. Some geometry types do not have a defined boundary, eg points or geometry collections, and will return null.", | ||
"arguments": [ {"arg":"geometry","description":"a geometry"} ], | ||
"examples": [ { "expression":"geom_to_wkt(boundary(geom_from_wkt('Polygon((1 1, 0 0, -1 1, 1 1))')))", "returns":"'LineString(1 1,0 0,-1 1,1 1)'"}] | ||
} | ||
|
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Original file line number | Diff line number | Diff line change |
---|---|---|
|
@@ -118,3 +118,4 @@ QgsAbstractGeometryV2* QgsMultiLineStringV2::toCurveType() const | |
} | ||
return multiCurve; | ||
} | ||
|
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