Class: QgsLayoutItemElevationProfile

A layout item subclass for elevation profile plots.

Added in version 3.30.

Class Hierarchy

Base classes

QgsLayoutItem	Base class for graphical items within a QgsLayout.
QgsLayoutObject	A base class for objects which belong to a layout.
QObject
QgsExpressionContextGenerator	Abstract interface for generating an expression context.
QGraphicsRectItem
QAbstractGraphicsShapeItem
QGraphicsItem
QgsLayoutUndoObjectInterface	Interface for layout objects which support undo/redo commands.

Methods

atlasDriven	Returns whether the profile curve is set to follow the current atlas feature.
crs	Returns the desired Coordinate Reference System for the profile.
distanceUnit	Returns the units for the distance axis.
layers	Returns the list of map layers participating in the elevation profile.
plot	Returns a reference to the elevation plot object, which can be used to set plot appearance and properties.
profileCurve	Returns the cross section profile curve, which represents the line along which the profile should be generated.
profileRequest	Returns the profile request used to generate the elevation profile.
setAtlasDriven	Sets whether the profile curve will follow the current atlas feature.
setCrs	Sets the desired Coordinate Reference System (crs) for the profile.
setDistanceUnit	Sets the unit for the distance axis.
setLayers	Sets the list of map layers participating in the elevation profile.
setProfileCurve	Sets the cross section profile curve, which represents the line along which the profile should be generated.
setSubsectionsSymbol	Sets the symbol used to draw the subsections.
setTolerance	Sets the tolerance of the request (in crs() units).
subsectionsSymbol	Returns the symbol used to draw the subsections.
tolerance	Returns the tolerance of the request (in crs() units).

Static Methods

create

Returns a new elevation profile item for the specified layout.

Signals

previewRefreshed

Emitted whenever the item's preview has been refreshed.

class qgis.core.QgsLayoutItemElevationProfile

Bases: QgsLayoutItem

__init__(layout: QgsLayout | None)

Constructor for QgsLayoutItemElevationProfile, with the specified parent layout.

Parameters:

layout (Optional[QgsLayout])

atlasDriven(self) → bool

Returns whether the profile curve is set to follow the current atlas feature.

See also

setAtlasDriven()

Return type:

bool

static create(layout: QgsLayout | None) → QgsLayoutItemElevationProfile | None

Returns a new elevation profile item for the specified layout.

The caller takes responsibility for deleting the returned object.

Parameters:

layout (Optional[QgsLayout])

Return type:

Optional[QgsLayoutItemElevationProfile]

crs(self) → QgsCoordinateReferenceSystem

Returns the desired Coordinate Reference System for the profile.

This also represents the CRS associated with the profileCurve().

See also

setCrs()

Return type:

QgsCoordinateReferenceSystem

distanceUnit(self) → Qgis.DistanceUnit

Returns the units for the distance axis.

See also

setDistanceUnit()

Added in version 3.32.

Return type:

Qgis.DistanceUnit

layers(self) → List[QgsMapLayer]

Returns the list of map layers participating in the elevation profile.

See also

setLayers()

Return type:

List[QgsMapLayer]

plot(self) → Qgs2DXyPlot | None

Returns a reference to the elevation plot object, which can be used to set plot appearance and properties.

Return type:

Optional[Qgs2DXyPlot]

signal previewRefreshed

Emitted whenever the item’s preview has been refreshed.

Added in version 3.34.

profileCurve(self) → QgsCurve | None

Returns the cross section profile curve, which represents the line along which the profile should be generated.

The coordinate reference system of the curve is retrieved via crs().

See also

setProfileCurve()

Return type:

Optional[QgsCurve]

profileRequest(self) → QgsProfileRequest

Returns the profile request used to generate the elevation profile.

Return type:

QgsProfileRequest

setAtlasDriven(self, enabled: bool)

Sets whether the profile curve will follow the current atlas feature.

This requires an active layout atlas or report, using a line geometry type coverage layer.

See also

atlasDriven()

Parameters:

enabled (bool)

setCrs(self, crs: QgsCoordinateReferenceSystem)

Sets the desired Coordinate Reference System (crs) for the profile.

This also represents the CRS associated with the profileCurve().

See also

crs()

Parameters:

crs (QgsCoordinateReferenceSystem)

setDistanceUnit(self, unit: Qgis.DistanceUnit)

Sets the unit for the distance axis.

See also

distanceUnit()

Added in version 3.32.

Parameters:

unit (Qgis.DistanceUnit)

setLayers(self, layers: Iterable[QgsMapLayer])

Sets the list of map layers participating in the elevation profile.

See also

layers()

Parameters:

layers (Iterable[QgsMapLayer])

setProfileCurve(self, curve: QgsCurve | None)

Sets the cross section profile curve, which represents the line along which the profile should be generated.

Ownership of curve is transferred to the item.

The coordinate reference system of the curve is set via setCrs().

See also

profileCurve()

Parameters:

curve (Optional[QgsCurve])

setSubsectionsSymbol(self, symbol: QgsLineSymbol | None)

Sets the symbol used to draw the subsections. If symbol is None, the subsections are not drawn. Ownership of symbol is transferred.

See also

subsectionsSymbol()

Added in version 3.44.

Parameters:

symbol (Optional[QgsLineSymbol])

setTolerance(self, tolerance: float)

Sets the tolerance of the request (in crs() units).

This value determines how far from the profileCurve() is appropriate for inclusion of results. For instance, when a profile is generated for a point vector layer this tolerance distance will dictate how far from the actual profile curve a point can reside within to be included in the results. Other sources may completely ignore this tolerance if it is not appropriate for the particular source.

See also

tolerance()

Parameters:

tolerance (float)

subsectionsSymbol(self) → QgsLineSymbol | None

Returns the symbol used to draw the subsections.

See also

setSubsectionsSymbol()

Added in version 3.44.

Return type:

Optional[QgsLineSymbol]

tolerance(self) → float

Returns the tolerance of the request (in crs() units).

This value determines how far from the profileCurve() is appropriate for inclusion of results. For instance, when a profile is generated for a point vector layer this tolerance distance will dictate how far from the actual profile curve a point can reside within to be included in the results. Other sources may completely ignore this tolerance if it is not appropriate for the particular source.

See also

setTolerance()

Return type:

float