Class: QgsMapLayerElevationProperties¶

class qgis.core.QgsMapLayerElevationProperties¶

Bases: PyQt5.QtCore.QObject

Base class for storage of map layer elevation properties.

QgsMapLayerElevationProperties exposes user-configurable settings for controlling how an individual QgsMapLayer behaves with relation to z values or elevations.

New in version 3.18.

QgsMapLayerElevationProperties(parent: QObject) Constructor for QgsMapLayerElevationProperties, with the specified parent object.

Methods

calculateZRange

Attempts to calculate the overall elevation or z range for the specified layer, using the settings defined by this elevation properties object.

childEvent

connectNotify

customEvent

disconnectNotify

flags

Returns flags associated to the elevation properties.

hasElevation

Returns True if the layer has an elevation or z component.

isSignalConnected

isVisibleInZRange

Returns True if the layer should be visible and rendered for the specified z range.

readXml

Reads the elevation properties from a DOM element previously written by writeXml().

receivers

sender

senderSignalIndex

timerEvent

writeXml

Writes the properties to a DOM element, to be used later with readXml().

Signals

changed

Emitted when the elevation properties have changed.

Attributes

FlagDontInvalidateCachedRendersWhenRangeChanges

class Flag¶: Bases: int

FlagDontInvalidateCachedRendersWhenRangeChanges = 1¶

class Flags¶

Bases: sip.wrapper

QgsMapLayerElevationProperties.Flags(Union[QgsMapLayerElevationProperties.Flags, QgsMapLayerElevationProperties.Flag]) QgsMapLayerElevationProperties.Flags(QgsMapLayerElevationProperties.Flags)

calculateZRange(self, layer: QgsMapLayer) → QgsDoubleRange ¶

Attempts to calculate the overall elevation or z range for the specified layer, using the settings defined by this elevation properties object.

May return an infinite range if the extent could not be calculated.

Parameters: layer (QgsMapLayer) –
Return type: QgsDoubleRange

changed¶: Emitted when the elevation properties have changed. [signal]

childEvent(self, QChildEvent)¶

connectNotify(self, QMetaMethod)¶

customEvent(self, QEvent)¶

disconnectNotify(self, QMetaMethod)¶

flags(self) → QgsMapLayerElevationProperties.Flags ¶

Returns flags associated to the elevation properties.

Return type: QgsMapLayerElevationProperties.Flags

hasElevation(self) → bool¶

Returns True if the layer has an elevation or z component.

Return type: bool

isSignalConnected(self, QMetaMethod) → bool¶

isVisibleInZRange(self, range: QgsDoubleRange) → bool¶

Returns True if the layer should be visible and rendered for the specified z range.

Parameters: range (QgsDoubleRange) –
Return type: bool

readXml(self, element: QDomElement, context: QgsReadWriteContext) → bool¶

Reads the elevation properties from a DOM element previously written by writeXml().