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How does qgsgeometry create an abstract geometry object?
QgsGeometry (geom: QgsAbstractGeometry) Creates a geometry from an abstract geometry object. Ownership of geom is transferred. New in version 2.10. A geometry is the spatial representation of a feature.
How to add field with geometry WKT in QGIS?
You need to both (i) create a new string attribute with a high character limit and (ii) use the field calculator to convert the geometry to its WKT representation. I can suggest using a “Virtual Layer” through Layer > Add Layer > Add/Edit Virtual Layer…
How to do Union geometry in qgsgeometry?
Clips the geometry using the specified rectangle. Searches for the closest vertex in this geometry to the given point. Returns a geometry representing all the points in this geometry and other (a union geometry operation). Compares two geometry objects for equality within a specified tolerance.
What does qgsgeometry do in QGIS 2.10?
Since QGIS 2.10, QgsGeometry acts as a generic container for geometry objects. QgsGeometry is implicitly shared, so making copies of geometries is inexpensive. The geometry container class can also be stored inside a QVariant object.
Which is the generic container for geometry in QGIS?
A geometry is the spatial representation of a feature. Since QGIS 2.10, QgsGeometry acts as a generic container for geometry objects. QgsGeometry is implicitly shared, so making copies of geometries is inexpensive. The geometry container class can also be stored inside a QVariant object.
How to do Delaunay triangulation in qgsgeometry?
Creates a QgsPolygonXYfrom a QPolygonF. Creates a QgsPolylineXY from a QPolygonF. Returns the Delaunay triangulation for the vertices of the geometry. Deletes a ring in polygon or multipolygon. Returns a copy of the geometry which has been densified by adding the specified number of extra nodes within each segment of the geometry.
Where is the geometry class stored in qvariant?
The geometry container class can also be stored inside a QVariant object. The actual geometry representation is stored as a QgsAbstractGeometry within the container, and can be accessed via the geometry () method or set using the setGeometry () method.