Class: QgsLayoutItemElevationProfile

class qgis.core.QgsLayoutItemElevationProfile

Bases: QgsLayoutItem

A layout item subclass for elevation profile plots.

New in version 3.30.

QgsLayoutItemElevationProfile(layout: QgsLayout) Constructor for QgsLayoutItemElevationProfile, with the specified parent layout.

Methods

adjustPointForReferencePosition

Adjusts the specified point at which a reference position of the item sits and returns the top left corner of the item, if reference point were placed at the specified position.

applyDataDefinedSize

Applies any present data defined size overrides to the specified layout size.

applyItemSizeConstraint

Applies any item-specific size constraint handling to a given targetSize in layout units.

atlasDriven

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

childEvent

connectNotify

contextMenuEvent

create

Returns a new elevation profile item for the specified layout.

crs

Returns the desired Coordinate Reference System for the profile.

customEvent

disconnectNotify

dragEnterEvent

dragLeaveEvent

dragMoveEvent

draw

param context

drawBackground

Draws the background for the item.

drawDebugRect

Draws a debugging rectangle of the item's current bounds within the specified painter.

drawFrame

Draws the frame around the item.

dropEvent

focusInEvent

focusOutEvent

framePath

Returns the path to use when drawing the item's frame or background.

hoverEnterEvent

hoverLeaveEvent

hoverMoveEvent

icon

rtype

QIcon

inputMethodEvent

inputMethodQuery

invalidateCache

isSignalConnected

itemChange

itemFlags

rtype

QgsLayoutItem.Flags

keyPressEvent

keyReleaseEvent

layers

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

mouseDoubleClickEvent

mouseMoveEvent

mousePressEvent

mouseReleaseEvent

paint

param painter

plot

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

positionAtReferencePoint

Returns the current position (in layout units) of a reference point for the item.

prepareGeometryChange

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.

readObjectPropertiesFromElement

Sets object properties from a DOM element

readPropertiesFromElement

param element

receivers

refresh

refreshBackgroundColor

Refresh item's background color, considering data defined colors.

refreshBlendMode

Refresh item's blend mode, considering data defined blend mode.

refreshDataDefinedProperty

param property

refreshFrame

Refresh item's frame, considering data defined colors and frame size.

refreshItemPosition

Refreshes an item's position by rechecking it against any possible overrides such as data defined positioning.

refreshItemRotation

Refreshes an item's rotation by rechecking it against any possible overrides such as data defined rotation.

refreshItemSize

Refreshes an item's size by rechecking it against any possible item fixed or minimum sizes.

refreshOpacity

Refresh item's opacity, considering data defined opacity.

sceneEvent

sceneEventFilter

sender

senderSignalIndex

setAtlasDriven

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

setCrs

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

setFixedSize

Sets a fixed size for the layout item, which prevents it from being freely resized.

setLayers

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

setMinimumSize

Sets the minimum allowed size for the layout item.

setProfileCurve

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

setTolerance

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

timerEvent

tolerance

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

topLeftToReferencePoint

Returns the position for the reference point of the item, if the top-left of the item was placed at the specified point.

type

rtype

int

updateMicroFocus

wheelEvent

writeObjectPropertiesToElement

Stores object properties within an XML DOM element.

writePropertiesToElement

param element

adjustPointForReferencePosition(self, point: Union[QPointF, QPoint], size: QSizeF, reference: QgsLayoutItem.ReferencePoint) QPointF

Adjusts the specified point at which a reference position of the item sits and returns the top left corner of the item, if reference point were placed at the specified position.

applyDataDefinedSize(self, size: QgsLayoutSize) QgsLayoutSize

Applies any present data defined size overrides to the specified layout size.

applyItemSizeConstraint(self, targetSize: QSizeF) QSizeF

Applies any item-specific size constraint handling to a given targetSize in layout units. Subclasses can override this method if they need to apply advanced logic regarding item sizes, which cannot be covered by setFixedSize() or setMinimumSize(). Item size constraints are applied after fixed, minimum and data defined size constraints.

See also

setFixedSize()

See also

setMinimumSize()

atlasDriven(self) bool

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

See also

setAtlasDriven()

Return type

bool

childEvent(self, QChildEvent)
connectNotify(self, QMetaMethod)
contextMenuEvent(self, QGraphicsSceneContextMenuEvent)
create(layout: QgsLayout) QgsLayoutItemElevationProfile

Returns a new elevation profile item for the specified layout.

The caller takes responsibility for deleting the returned object.

Parameters

layout (QgsLayout) –

Return type

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

customEvent(self, QEvent)
disconnectNotify(self, QMetaMethod)
dragEnterEvent(self, QGraphicsSceneDragDropEvent)
dragLeaveEvent(self, QGraphicsSceneDragDropEvent)
dragMoveEvent(self, QGraphicsSceneDragDropEvent)
draw(self, context: QgsLayoutItemRenderContext)
Parameters

context (QgsLayoutItemRenderContext) –

drawBackground(self, context: QgsRenderContext)

Draws the background for the item.

See also

framePath()

drawDebugRect(self, painter: QPainter)

Draws a debugging rectangle of the item’s current bounds within the specified painter.

Parameters

painter – destination QPainter

drawFrame(self, context: QgsRenderContext)

Draws the frame around the item.

See also

framePath()

dropEvent(self, QGraphicsSceneDragDropEvent)
focusInEvent(self, QFocusEvent)
focusOutEvent(self, QFocusEvent)
framePath(self) QPainterPath

Returns the path to use when drawing the item’s frame or background.

See also

drawFrame()

See also

drawBackground()

New in version 3.16.

hoverEnterEvent(self, QGraphicsSceneHoverEvent)
hoverLeaveEvent(self, QGraphicsSceneHoverEvent)
hoverMoveEvent(self, QGraphicsSceneHoverEvent)
icon(self) QIcon
Return type

QIcon

inputMethodEvent(self, QInputMethodEvent)
inputMethodQuery(self, Qt.InputMethodQuery) Any
invalidateCache(self)
isSignalConnected(self, QMetaMethod) bool
itemChange(self, QGraphicsItem.GraphicsItemChange, Any) Any
itemFlags(self) QgsLayoutItem.Flags
Return type

QgsLayoutItem.Flags

keyPressEvent(self, QKeyEvent)
keyReleaseEvent(self, QKeyEvent)
layers(self) List[QgsMapLayer]

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

See also

setLayers()

Return type

List[QgsMapLayer]

mouseDoubleClickEvent(self, QGraphicsSceneMouseEvent)
mouseMoveEvent(self, QGraphicsSceneMouseEvent)
mousePressEvent(self, QGraphicsSceneMouseEvent)
mouseReleaseEvent(self, QGraphicsSceneMouseEvent)
paint(self, painter: QPainter, itemStyle: QStyleOptionGraphicsItem, pWidget: QWidget)
Parameters
  • painter (QPainter) –

  • itemStyle (QStyleOptionGraphicsItem) –

  • pWidget (QWidget) –

plot(self) Qgs2DPlot

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

Return type

Qgs2DPlot

positionAtReferencePoint(self, reference: QgsLayoutItem.ReferencePoint) QPointF

Returns the current position (in layout units) of a reference point for the item.

prepareGeometryChange(self)
profileCurve(self) QgsCurve

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().

Return type

QgsCurve

profileRequest(self) QgsProfileRequest

Returns the profile request used to generate the elevation profile.

Return type

QgsProfileRequest

readObjectPropertiesFromElement(self, parentElement: QDomElement, document: QDomDocument, context: QgsReadWriteContext) bool

Sets object properties from a DOM element

Parameters
  • parentElement – is the parent DOM element for the object

  • document – DOM document

  • context – read write context

Returns

True if read was successful

readPropertiesFromElement(self, element: QDomElement, document: QDomDocument, context: QgsReadWriteContext) bool
Parameters
Return type

bool

receivers(self, PYQT_SIGNAL) int
refresh(self)
refreshBackgroundColor(self, updateItem: bool = True)

Refresh item’s background color, considering data defined colors. If updateItem is set to False, the item will not be automatically updated after the frame color is set and a later call to update() must be made.

refreshBlendMode(self)

Refresh item’s blend mode, considering data defined blend mode.

refreshDataDefinedProperty(self, property: QgsLayoutObject.DataDefinedProperty = QgsLayoutObject.AllProperties)
Parameters

property (QgsLayoutObject.DataDefinedProperty = QgsLayoutObject.AllProperties) –

refreshFrame(self, updateItem: bool = True)

Refresh item’s frame, considering data defined colors and frame size. If updateItem is set to False, the item will not be automatically updated after the frame is set and a later call to update() must be made.

refreshItemPosition(self)

Refreshes an item’s position by rechecking it against any possible overrides such as data defined positioning.

refreshItemRotation(self, origin: Union[QPointF, QPoint] = None)

Refreshes an item’s rotation by rechecking it against any possible overrides such as data defined rotation.

The optional origin point specifies the origin (in item coordinates) around which the rotation should be applied.

refreshItemSize(self)

Refreshes an item’s size by rechecking it against any possible item fixed or minimum sizes.

See also

setFixedSize()

See also

setMinimumSize()

refreshOpacity(self, updateItem: bool = True)

Refresh item’s opacity, considering data defined opacity. If updateItem is set to False the item will not be automatically updated after the opacity is set and a later call to update() must be made.

sceneEvent(self, QEvent) bool
sceneEventFilter(self, QGraphicsItem, QEvent) bool
sender(self) QObject
senderSignalIndex(self) int
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) –

setFixedSize(self, size: QgsLayoutSize)

Sets a fixed size for the layout item, which prevents it from being freely resized. Set an empty size if item can be freely resized.

See also

fixedSize()

See also

setMinimumSize()

setLayers(self, layers: Iterable[QgsMapLayer])

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

See also

layers()

Parameters

layers (Iterable[QgsMapLayer]) –

setMinimumSize(self, size: QgsLayoutSize)

Sets the minimum allowed size for the layout item. Set an empty size if item can be freely resized.

See also

minimumSize()

See also

setFixedSize()

setProfileCurve(self, curve: QgsCurve)

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 (QgsCurve) –

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) –

timerEvent(self, QTimerEvent)
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

topLeftToReferencePoint(self, point: QgsLayoutPoint) QgsLayoutPoint

Returns the position for the reference point of the item, if the top-left of the item was placed at the specified point.

type(self) int
Return type

int

updateMicroFocus(self)
wheelEvent(self, QGraphicsSceneWheelEvent)
writeObjectPropertiesToElement(self, parentElement: QDomElement, document: QDomDocument, context: QgsReadWriteContext) bool

Stores object properties within an XML DOM element.

Parameters
  • parentElement – is the parent DOM element to store the object’s properties in

  • document – DOM document

  • context – read write context

Returns

True if write was successful

writePropertiesToElement(self, element: QDomElement, document: QDomDocument, context: QgsReadWriteContext) bool
Parameters
Return type

bool