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45 lines
1.2 KiB
Python
45 lines
1.2 KiB
Python
##Vector geometry tools=group
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##Polygons=vector
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##Max_area=number 100000
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##Results=output vector
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from qgis.core import Qgis, QgsFeature, QgsGeometry, QgsWkbTypes
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from shapely.geometry import Polygon, MultiPolygon
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from shapely.wkb import loads
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from shapely.wkt import dumps
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polyLayer = processing.getObject(Polygons)
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polyPrder = polyLayer.dataProvider()
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n = polyLayer.featureCount()
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l = 0
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writer = processing.VectorWriter(Results, None, polyPrder.fields(),
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QgsWkbTypes.MultiPolygon, polyPrder.crs())
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resgeom = QgsGeometry()
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resfeat = QgsFeature()
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for feat in processing.features(polyLayer):
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progress.setPercentage(int(100 * l / n))
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l += 1
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g = loads(feat.geometry().exportToWkb())
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if g.geom_type == 'MultiPolygon':
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resg = [Polygon(p.exterior,
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[r for r in p.interiors if Polygon(r).area > Max_area]) for p in g]
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else:
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resg = [Polygon(g.exterior,
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[r for r in g.interiors if Polygon(r).area > Max_area])]
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resgeom = QgsGeometry().fromWkt(dumps(MultiPolygon(resg)))
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resfeat.setAttributes(feat.attributes())
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resfeat.setGeometry(resgeom)
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writer.addFeature(resfeat)
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del writer
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