Class: QgsSimplifyMethod

This class contains information about how to simplify geometries fetched from a QgsFeatureIterator

Methods

forceLocalOptimization	Gets whether the simplification executes after fetch the geometries from provider, otherwise it executes, when supported, in provider before fetch the geometries
methodType	Gets the simplification type
setForceLocalOptimization	Sets whether the simplification executes after fetch the geometries from provider, otherwise it executes, when supported, in provider before fetch the geometries
setMethodType	Sets the simplification type
setThreshold	Sets the simplification threshold in pixels.
setTolerance	Sets the tolerance of simplification in map units.
threshold	Gets the simplification threshold in pixels.
tolerance	Gets the tolerance of simplification in map units.

Static Methods

createGeometrySimplifier

Creates a geometry simplifier according to specified method

Attributes

NoSimplification
OptimizeForRendering
PreserveTopology

class qgis.core.QgsSimplifyMethod

Bases: object

__init__()

construct a default method

__init__(a0: QgsSimplifyMethod)

Parameters:

a0 (QgsSimplifyMethod)

class MethodType

Bases: int

NoSimplification = 0

OptimizeForRendering = 1

PreserveTopology = 2

static createGeometrySimplifier(simplifyMethod: QgsSimplifyMethod) → QgsAbstractGeometrySimplifier | None

Creates a geometry simplifier according to specified method

Parameters:

simplifyMethod (QgsSimplifyMethod)

Return type:

Optional[QgsAbstractGeometrySimplifier]

forceLocalOptimization(self) → bool

Gets whether the simplification executes after fetch the geometries from provider, otherwise it executes, when supported, in provider before fetch the geometries

Return type:

bool

methodType(self) → QgsSimplifyMethod.MethodType

Gets the simplification type

Return type:

QgsSimplifyMethod.MethodType

setForceLocalOptimization(self, localOptimization: bool)

Sets whether the simplification executes after fetch the geometries from provider, otherwise it executes, when supported, in provider before fetch the geometries

Parameters:

localOptimization (bool)

setMethodType(self, methodType: QgsSimplifyMethod.MethodType)

Sets the simplification type

Parameters:

methodType (QgsSimplifyMethod.MethodType)

setThreshold(self, threshold: float)

Sets the simplification threshold in pixels. Represents the maximum distance in pixels between two coordinates which can be considered equal.

Parameters:

threshold (float)

setTolerance(self, tolerance: float)

Sets the tolerance of simplification in map units. Represents the maximum distance in map units between two coordinates which can be considered equal.

Parameters:

tolerance (float)

threshold(self) → float

Gets the simplification threshold in pixels. Represents the maximum distance in pixels between two coordinates which can be considered equal.

Return type:

float

tolerance(self) → float

Gets the tolerance of simplification in map units. Represents the maximum distance in map units between two coordinates which can be considered equal.

Return type:

float