Class: QgsSingleGeometryCheck

Base class for geometry checks for a single geometry without any context of the layer or other layers in the project.

Classic examples are validity checks like self-intersection.

Subclasses need to implement the processGeometry method.

Added in version 3.4.

Note

This is an abstract class, with methods which must be implemented by a subclass.

The following methods must be implemented: QgsGeometryCheck.checkType(), QgsGeometryCheck.collectErrors(), QgsGeometryCheck.compatibleGeometryTypes(), QgsGeometryCheck.description(), QgsGeometryCheck.id(), processGeometry()

Class Hierarchy

Base classes

QgsGeometryCheck

Base class for geometry checks.

Abstract Methods

processGeometry

Check the geometry for errors.

class qgis.analysis.QgsSingleGeometryCheck

Bases: QgsGeometryCheck

__init__(context: QgsGeometryCheckContext | None, configuration: Dict[str, Any])

Creates a new single geometry check.

Parameters:

• context (Optional[QgsGeometryCheckContext])

• configuration (Dict[str, Any])

__init__(a0: QgsSingleGeometryCheck)

Parameters:

a0 (QgsSingleGeometryCheck)

abstract processGeometry(self, geometry: QgsGeometry) → List[QgsSingleGeometryCheckError]

Check the geometry for errors. It may make use of configuration options.

Returns a list of QgsSingleGeometryCheckErrors, ownership is transferred to the caller. An empty list is returned for geometries without errors.

Added in version 3.4.

Parameters:

geometry (QgsGeometry)

Return type:

List[QgsSingleGeometryCheckError]