Raster layer specific subclass of QgsMapLayerElevationProperties. More...

#include <qgsrasterlayerelevationproperties.h>

Inheritance diagram for QgsRasterLayerElevationProperties:

[legend]

Public Member Functions
	QgsRasterLayerElevationProperties (QObject *parent)
	Constructor for QgsRasterLayerElevationProperties, with the specified parent object.

	~QgsRasterLayerElevationProperties () override

int	bandForElevationRange (QgsRasterLayer *layer, const QgsDoubleRange &range) const
	Returns the band corresponding to the specified range.

int	bandNumber () const
	Returns the band number from which the elevation should be taken.

QgsDoubleRange	calculateZRange (QgsMapLayer *layer) const override
	Attempts to calculate the overall elevation or z range for the specified layer, using the settings defined by this elevation properties object.

QgsRasterLayerElevationProperties *	clone () const override
	Creates a clone of the properties.

double	elevationLimit () const
	Returns the elevation limit, which is used when profileSymbology() is Qgis::ProfileSurfaceSymbology::FillBelow or Qgis::ProfileSurfaceSymbology::FillAbove to limit the fill to a specific elevation range.

QgsDoubleRange	elevationRangeForPixelValue (QgsRasterLayer *layer, int band, double pixelValue) const
	Returns the elevation range corresponding to a raw pixel value from the specified band.

QgsDoubleRange	fixedRange () const
	Returns the fixed elevation range for the raster.

QMap< int, QgsDoubleRange >	fixedRangePerBand () const
	Returns the fixed elevation range for each band.

QgsMapLayerElevationProperties::Flags	flags () const override
	Returns flags associated to the elevation properties.

bool	hasElevation () const override
	Returns `true` if the layer has an elevation or z component.

QString	htmlSummary () const override
	Returns a HTML formatted summary of the properties.

bool	isEnabled () const
	Returns `true` if the elevation properties are enabled, i.e.

bool	isVisibleInZRange (const QgsDoubleRange &range, QgsMapLayer *layer=nullptr) const override
	Returns `true` if the layer should be visible and rendered for the specified z range.

Qgis::RasterElevationMode	mode () const
	Returns the elevation mode.

QgsFillSymbol *	profileFillSymbol () const
	Returns the fill symbol used to render the raster profile in elevation profile plots.

QgsLineSymbol *	profileLineSymbol () const
	Returns the line symbol used to render the raster profile in elevation profile plots.

Qgis::ProfileSurfaceSymbology	profileSymbology () const
	Returns the symbology option used to render the raster profile in elevation profile plots.

bool	readXml (const QDomElement &element, const QgsReadWriteContext &context) override
	Reads the elevation properties from a DOM element previously written by writeXml().

void	setBandNumber (int band)
	Sets the band number from which the elevation should be taken.

void	setElevationLimit (double limit)
	Sets the elevation limit, which is used when profileSymbology() is Qgis::ProfileSurfaceSymbology::FillBelow or Qgis::ProfileSurfaceSymbology::FillAbove to limit the fill to a specific elevation range.

void	setEnabled (bool enabled)
	Sets whether the elevation properties are enabled, i.e.

void	setFixedRange (const QgsDoubleRange &range)
	Sets the fixed elevation range for the raster.

void	setFixedRangePerBand (const QMap< int, QgsDoubleRange > &ranges)
	Sets the fixed elevation range for each band.

void	setMode (Qgis::RasterElevationMode mode)
	Sets the elevation mode.

void	setProfileFillSymbol (QgsFillSymbol *symbol)
	Sets the fill symbol used to render the raster profile in elevation profile plots.

void	setProfileLineSymbol (QgsLineSymbol *symbol)
	Sets the line symbol used to render the raster profile in elevation profile plots.

void	setProfileSymbology (Qgis::ProfileSurfaceSymbology symbology)
	Sets the symbology option used to render the raster profile in elevation profile plots.

bool	showByDefaultInElevationProfilePlots () const override
	Returns `true` if the layer should be visible by default in newly created elevation profile plots.

QList< double >	significantZValues (QgsMapLayer *layer) const override
	Returns a list of significant elevation/z-values for the specified layer, using the settings defined by this elevation properties object.

QDomElement	writeXml (QDomElement &element, QDomDocument &doc, const QgsReadWriteContext &context) override
	Writes the properties to a DOM element, to be used later with readXml().

Public Member Functions inherited from QgsMapLayerElevationProperties
	QgsMapLayerElevationProperties (QObject *parent)
	Constructor for QgsMapLayerElevationProperties, with the specified parent object.

QgsPropertyCollection &	dataDefinedProperties ()
	Returns a reference to the object's property collection, used for data defined overrides.

const QgsPropertyCollection &	dataDefinedProperties () const
	Returns a reference to the object's property collection, used for data defined overrides.

void	setDataDefinedProperties (const QgsPropertyCollection &collection)
	Sets the object's property collection, used for data defined overrides.

virtual void	setDefaultsFromLayer (QgsMapLayer *layer)
	Sets default properties based on sensible choices for the given map layer.

void	setZOffset (double offset)
	Sets the z offset, which is a fixed offset amount which will be added to z values from the layer.

void	setZScale (double scale)
	Sets the z scale, which is a scaling factor which will be applied to z values from the layer.

double	zOffset () const
	Returns the z offset, which is a fixed offset amount which should be added to z values from the layer.

double	zScale () const
	Returns the z scale, which is a scaling factor which should be applied to z values from the layer.

Static Public Member Functions
static bool	layerLooksLikeDem (QgsRasterLayer *layer)
	Returns `true` if a raster layer looks like a DEM.

Static Public Member Functions inherited from QgsMapLayerElevationProperties
static QgsPropertiesDefinition	propertyDefinitions ()
	Returns the definitions for data defined properties available for use in elevation properties.

Additional Inherited Members
Public Types inherited from QgsMapLayerElevationProperties
enum	Flag { FlagDontInvalidateCachedRendersWhenRangeChanges = 1 }
	Flags attached to the elevation property. More...

typedef QFlags< Flag >	Flags

enum class	Property : int { ZOffset , ExtrusionHeight , RasterPerBandLowerElevation , RasterPerBandUpperElevation }
	Data definable properties. More...

Signals inherited from QgsMapLayerElevationProperties
void	changed ()
	Emitted when any of the elevation properties have changed.

void	profileGenerationPropertyChanged ()
	Emitted when any of the elevation properties which relate solely to generation of elevation profiles have changed.

void	profileRenderingPropertyChanged ()
	Emitted when any of the elevation properties which relate solely to presentation of elevation results have changed.

void	zOffsetChanged ()
	Emitted when the z offset changes.

void	zScaleChanged ()
	Emitted when the z scale changes.

Protected Member Functions inherited from QgsMapLayerElevationProperties
void	copyCommonProperties (const QgsMapLayerElevationProperties *other)
	Copies common properties from another object.

void	readCommonProperties (const QDomElement &element, const QgsReadWriteContext &context)
	Reads common class properties from a DOM element previously written by writeXml().

void	writeCommonProperties (QDomElement &element, QDomDocument &doc, const QgsReadWriteContext &context)
	Writes common class properties to a DOM element, to be used later with readXml().

Protected Attributes inherited from QgsMapLayerElevationProperties
QgsPropertyCollection	mDataDefinedProperties
	Property collection for data defined elevation settings.

double	mZOffset = 0.0
	Z offset.

double	mZScale = 1.0
	Z scale.

Static Protected Attributes inherited from QgsMapLayerElevationProperties
static QgsPropertiesDefinition	sPropertyDefinitions
	Property definitions.

Detailed Description

Raster layer specific subclass of QgsMapLayerElevationProperties.

Since: QGIS 3.26

Definition at line 36 of file qgsrasterlayerelevationproperties.h.

Constructor & Destructor Documentation

◆ QgsRasterLayerElevationProperties()

QgsRasterLayerElevationProperties::QgsRasterLayerElevationProperties ( QObject * parent )

Constructor for QgsRasterLayerElevationProperties, with the specified parent object.

Definition at line 30 of file qgsrasterlayerelevationproperties.cpp.

◆ ~QgsRasterLayerElevationProperties()

QgsRasterLayerElevationProperties::~QgsRasterLayerElevationProperties ( )

overridedefault

Member Function Documentation

◆ bandForElevationRange()

int QgsRasterLayerElevationProperties::bandForElevationRange	(	QgsRasterLayer *	layer,
		const QgsDoubleRange &	range
	)		const

Returns the band corresponding to the specified range.

Note: This is only considered when mode() is Qgis::RasterElevationMode::FixedRangePerBand or Qgis::RasterElevationMode::DynamicRangePerBand. For other modes it will always return -1.

Since: QGIS 3.38

Definition at line 550 of file qgsrasterlayerelevationproperties.cpp.

◆ bandNumber()

int QgsRasterLayerElevationProperties::bandNumber ( ) const

inline

Returns the band number from which the elevation should be taken.

Note: This is only considered when mode() is Qgis::RasterElevationMode::RepresentsElevationSurface.

See also: setBandNumber()

Definition at line 97 of file qgsrasterlayerelevationproperties.h.

◆ calculateZRange()

QgsDoubleRange QgsRasterLayerElevationProperties::calculateZRange ( QgsMapLayer * layer ) const

overridevirtual

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.

Reimplemented from QgsMapLayerElevationProperties.

Definition at line 276 of file qgsrasterlayerelevationproperties.cpp.

◆ clone()

QgsRasterLayerElevationProperties * QgsRasterLayerElevationProperties::clone ( ) const

overridevirtual

Creates a clone of the properties.

Since: QGIS 3.26

Implements QgsMapLayerElevationProperties.

Definition at line 168 of file qgsrasterlayerelevationproperties.cpp.

◆ elevationLimit()

double QgsRasterLayerElevationProperties::elevationLimit ( ) const

Returns the elevation limit, which is used when profileSymbology() is Qgis::ProfileSurfaceSymbology::FillBelow or Qgis::ProfileSurfaceSymbology::FillAbove to limit the fill to a specific elevation range.

By default this is NaN, which indicates that there is no elevation limit.

See also: setElevationLimit()

Since: QGIS 3.32

Definition at line 664 of file qgsrasterlayerelevationproperties.cpp.

◆ elevationRangeForPixelValue()

QgsDoubleRange QgsRasterLayerElevationProperties::elevationRangeForPixelValue	(	QgsRasterLayer *	layer,
		int	band,
		double	pixelValue
	)		const

Returns the elevation range corresponding to a raw pixel value from the specified band.

Returns an infinite range if the pixel value does not correspond to an elevation value.

Since: QGIS 3.38

Definition at line 489 of file qgsrasterlayerelevationproperties.cpp.

◆ fixedRange()

QgsDoubleRange QgsRasterLayerElevationProperties::fixedRange ( ) const

Returns the fixed elevation range for the raster.

Note: This is only considered when mode() is Qgis::RasterElevationMode::FixedElevationRange.; When a fixed range is set any zOffset() and zScale() is ignored.

See also: setFixedRange()

Since: QGIS 3.38

Definition at line 782 of file qgsrasterlayerelevationproperties.cpp.

◆ fixedRangePerBand()

QMap< int, QgsDoubleRange > QgsRasterLayerElevationProperties::fixedRangePerBand ( ) const

Returns the fixed elevation range for each band.

Note: This is only considered when mode() is Qgis::RasterElevationMode::FixedRangePerBand.; When a fixed range is set any zOffset() and zScale() is ignored.

See also: setFixedRangePerBand()

Since: QGIS 3.38

Definition at line 768 of file qgsrasterlayerelevationproperties.cpp.

◆ flags()

QgsMapLayerElevationProperties::Flags QgsRasterLayerElevationProperties::flags ( ) const

overridevirtual

Returns flags associated to the elevation properties.

Reimplemented from QgsMapLayerElevationProperties.

Definition at line 437 of file qgsrasterlayerelevationproperties.cpp.

◆ hasElevation()

bool QgsRasterLayerElevationProperties::hasElevation ( ) const

overridevirtual

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

Reimplemented from QgsMapLayerElevationProperties.

Definition at line 40 of file qgsrasterlayerelevationproperties.cpp.

◆ htmlSummary()

QString QgsRasterLayerElevationProperties::htmlSummary ( ) const

overridevirtual

Returns a HTML formatted summary of the properties.

Since: QGIS 3.26

Reimplemented from QgsMapLayerElevationProperties.

Definition at line 184 of file qgsrasterlayerelevationproperties.cpp.

◆ isEnabled()

bool QgsRasterLayerElevationProperties::isEnabled ( ) const

inline

Returns true if the elevation properties are enabled, i.e.

the raster layer values represent an elevation surface.

See also: setEnabled()

Definition at line 65 of file qgsrasterlayerelevationproperties.h.

◆ isVisibleInZRange()

bool QgsRasterLayerElevationProperties::isVisibleInZRange	(	const QgsDoubleRange &	range,
		QgsMapLayer *	layer = `nullptr`
	)		const

overridevirtual

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

Since QGIS 3.38 the layer argument can be used to specify the target layer.

Reimplemented from QgsMapLayerElevationProperties.

Definition at line 215 of file qgsrasterlayerelevationproperties.cpp.

◆ layerLooksLikeDem()

bool QgsRasterLayerElevationProperties::layerLooksLikeDem ( QgsRasterLayer * layer )

static

Returns true if a raster layer looks like a DEM.

This method applies some heuristics to layer to determine whether it looks like a candidate for a DEM layer.

Specifically, it checks:

the layer's name for DEM-like wording hints
whether the layer contains a single band
whether the layer contains an attribute table (if so, it's unlikely to be a DEM)
the layer's data type

Since: QGIS 3.32

Definition at line 679 of file qgsrasterlayerelevationproperties.cpp.

◆ mode()

Qgis::RasterElevationMode QgsRasterLayerElevationProperties::mode ( ) const

Returns the elevation mode.

See also: setMode()

Since: QGIS 3.38

Definition at line 465 of file qgsrasterlayerelevationproperties.cpp.

◆ profileFillSymbol()

QgsFillSymbol * QgsRasterLayerElevationProperties::profileFillSymbol ( ) const

Returns the fill symbol used to render the raster profile in elevation profile plots.

See also: setProfileFillSymbol()

Definition at line 642 of file qgsrasterlayerelevationproperties.cpp.

◆ profileLineSymbol()

QgsLineSymbol * QgsRasterLayerElevationProperties::profileLineSymbol ( ) const

Returns the line symbol used to render the raster profile in elevation profile plots.

See also: setProfileLineSymbol()

Definition at line 630 of file qgsrasterlayerelevationproperties.cpp.

◆ profileSymbology()

Qgis::ProfileSurfaceSymbology QgsRasterLayerElevationProperties::profileSymbology ( ) const

inline

Returns the symbology option used to render the raster profile in elevation profile plots.

See also: setProfileSymbology()

Definition at line 212 of file qgsrasterlayerelevationproperties.h.

◆ readXml()

bool QgsRasterLayerElevationProperties::readXml	(	const QDomElement &	element,
		const QgsReadWriteContext &	context
	)

overridevirtual

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

See also: writeXml()

Implements QgsMapLayerElevationProperties.

Definition at line 102 of file qgsrasterlayerelevationproperties.cpp.

◆ setBandNumber()

void QgsRasterLayerElevationProperties::setBandNumber ( int band )

Sets the band number from which the elevation should be taken.

Note: This is only considered when mode() is Qgis::RasterElevationMode::RepresentsElevationSurface.

See also: bandNumber()

Definition at line 479 of file qgsrasterlayerelevationproperties.cpp.

◆ setElevationLimit()

void QgsRasterLayerElevationProperties::setElevationLimit ( double limit )

Sets the elevation limit, which is used when profileSymbology() is Qgis::ProfileSurfaceSymbology::FillBelow or Qgis::ProfileSurfaceSymbology::FillAbove to limit the fill to a specific elevation range.

Set to NaN to indicate that there is no elevation limit.

See also: elevationLimit()

Since: QGIS 3.32

Definition at line 669 of file qgsrasterlayerelevationproperties.cpp.

◆ setEnabled()

void QgsRasterLayerElevationProperties::setEnabled ( bool enabled )

Sets whether the elevation properties are enabled, i.e.

the raster layer values represent an elevation surface.

See also: isEnabled()

Definition at line 455 of file qgsrasterlayerelevationproperties.cpp.

◆ setFixedRange()

void QgsRasterLayerElevationProperties::setFixedRange ( const QgsDoubleRange & range )

Sets the fixed elevation range for the raster.

Note: This is only considered when mode() is Qgis::RasterElevationMode::FixedElevationRange.; When a fixed range is set any zOffset() and zScale() is ignored.

See also: fixedRange()

Since: QGIS 3.38

Definition at line 787 of file qgsrasterlayerelevationproperties.cpp.

◆ setFixedRangePerBand()

void QgsRasterLayerElevationProperties::setFixedRangePerBand ( const QMap< int, QgsDoubleRange > & ranges )

Sets the fixed elevation range for each band.

Note: This is only considered when mode() is Qgis::RasterElevationMode::FixedRangePerBand.; When a fixed range is set any zOffset() and zScale() is ignored.

See also: fixedRangePerBand()

Since: QGIS 3.38

Definition at line 773 of file qgsrasterlayerelevationproperties.cpp.

◆ setMode()

void QgsRasterLayerElevationProperties::setMode ( Qgis::RasterElevationMode mode )

Sets the elevation mode.

See also: mode()

Since: QGIS 3.38

Definition at line 470 of file qgsrasterlayerelevationproperties.cpp.

◆ setProfileFillSymbol()

void QgsRasterLayerElevationProperties::setProfileFillSymbol ( QgsFillSymbol * symbol )

Sets the fill symbol used to render the raster profile in elevation profile plots.

Ownership of symbol is transferred to the plot.

See also: profileFillSymbol()

Definition at line 647 of file qgsrasterlayerelevationproperties.cpp.

◆ setProfileLineSymbol()

void QgsRasterLayerElevationProperties::setProfileLineSymbol ( QgsLineSymbol * symbol )

Sets the line symbol used to render the raster profile in elevation profile plots.

Ownership of symbol is transferred to the plot.

See also: profileLineSymbol()

Definition at line 635 of file qgsrasterlayerelevationproperties.cpp.

◆ setProfileSymbology()

void QgsRasterLayerElevationProperties::setProfileSymbology ( Qgis::ProfileSurfaceSymbology symbology )

Sets the symbology option used to render the raster profile in elevation profile plots.

See also: setProfileSymbology()

Definition at line 654 of file qgsrasterlayerelevationproperties.cpp.

◆ showByDefaultInElevationProfilePlots()

bool QgsRasterLayerElevationProperties::showByDefaultInElevationProfilePlots ( ) const

overridevirtual

Returns true if the layer should be visible by default in newly created elevation profile plots.

Subclasses should override this with logic which determines whether the layer is likely desirable to be initially checked in these plots.

Since: QGIS 3.26

Reimplemented from QgsMapLayerElevationProperties.

Definition at line 432 of file qgsrasterlayerelevationproperties.cpp.

◆ significantZValues()

QList< double > QgsRasterLayerElevationProperties::significantZValues ( QgsMapLayer * layer ) const

overridevirtual

Returns a list of significant elevation/z-values for the specified layer, using the settings defined by this elevation properties object.

These values will be highlighted in elevation related widgets for the layer.

Since: QGIS 3.38

Reimplemented from QgsMapLayerElevationProperties.

Definition at line 360 of file qgsrasterlayerelevationproperties.cpp.

◆ writeXml()

QDomElement QgsRasterLayerElevationProperties::writeXml	(	QDomElement &	element,
		QDomDocument &	doc,
		const QgsReadWriteContext &	context
	)

overridevirtual

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

See also: readXml()

Implements QgsMapLayerElevationProperties.

Definition at line 45 of file qgsrasterlayerelevationproperties.cpp.

The documentation for this class was generated from the following files:

/build/qgis-3.41.0+git20241122+3440c17df1d+99sid/src/core/raster/qgsrasterlayerelevationproperties.h
/build/qgis-3.41.0+git20241122+3440c17df1d+99sid/src/core/raster/qgsrasterlayerelevationproperties.cpp

Public Member Functions

Static Public Member Functions

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

◆ QgsRasterLayerElevationProperties()

◆ ~QgsRasterLayerElevationProperties()

Member Function Documentation

◆ bandForElevationRange()

◆ bandNumber()

◆ calculateZRange()

◆ clone()

◆ elevationLimit()

◆ elevationRangeForPixelValue()

◆ fixedRange()

◆ fixedRangePerBand()

◆ flags()

◆ hasElevation()

◆ htmlSummary()

◆ isEnabled()

◆ isVisibleInZRange()

◆ layerLooksLikeDem()

◆ mode()

◆ profileFillSymbol()

◆ profileLineSymbol()

◆ profileSymbology()

◆ readXml()

◆ setBandNumber()

◆ setElevationLimit()

◆ setEnabled()

◆ setFixedRange()

◆ setFixedRangePerBand()

◆ setMode()

◆ setProfileFillSymbol()

◆ setProfileLineSymbol()

◆ setProfileSymbology()

◆ showByDefaultInElevationProfilePlots()

◆ significantZValues()

◆ writeXml()