Class: QgsPointCloudAttributeByRampRenderer

class qgis.core.QgsPointCloudAttributeByRampRenderer

Bases: QgsPointCloudRenderer

An RGB renderer for 2d visualisation of point clouds using embedded red, green and blue attributes.

New in version 3.18.

QgsPointCloudAttributeByRampRenderer() Constructor for QgsPointCloudAttributeByRampRenderer.

Methods

addPointToTriangulation	Adds a point to the list of points to be triangulated (only used when renderAsTriangles() is enabled)
attribute	Returns the attribute to use for the renderer.
clone	rtype: QgsPointCloudRenderer
colorRampShader	Returns the color ramp shader function used to visualize the attribute.
copyCommonProperties	Copies common point cloud properties (such as point size and screen error) to the destination renderer.
create	Creates an RGB renderer from an XML element.
createLegendNodes	param nodeLayer:
drawPoint	Draws a point using a color at the specified x and y (in map coordinates).
maximum	Returns the maximum value for attributes which will be used by the color ramp shader.
minimum	Returns the minimum value for attributes which will be used by the color ramp shader.
pointXY	Retrieves the x and y coordinate for the point at index i.
pointZ	Retrieves the z value for the point at index i.
renderBlock	param block:
restoreCommonProperties	Restores common renderer properties (such as point size and screen error) from the specified DOM element.
save	param doc:
saveCommonProperties	Saves common renderer properties (such as point size and screen error) to the specified DOM element.
setAttribute	Sets the attribute to use for the renderer.
setColorRampShader	Sets the color ramp shader function used to visualize the attribute.
setMaximum	Sets the maximum value for attributes which will be used by the color ramp shader.
setMinimum	Sets the minimum value for attributes which will be used by the color ramp shader.
type	rtype: str
usedAttributes	param context:

addPointToTriangulation(self, x: float, y: float, z: float, color: QColor | Qt.GlobalColor | QGradient, context: QgsPointCloudRenderContext)

Adds a point to the list of points to be triangulated (only used when renderAsTriangles() is enabled)

New in version 3.36.

attribute(self) → str

Returns the attribute to use for the renderer.

See also

setAttribute()

Return type:

str

clone(self) → QgsPointCloudRenderer

Return type:

QgsPointCloudRenderer

colorRampShader(self) → QgsColorRampShader

Returns the color ramp shader function used to visualize the attribute.

See also

setColorRampShader()

Return type:

QgsColorRampShader

copyCommonProperties(self, destination: QgsPointCloudRenderer)

Copies common point cloud properties (such as point size and screen error) to the destination renderer.

create(element: QDomElement, context: QgsReadWriteContext) → QgsPointCloudRenderer

Creates an RGB renderer from an XML element.

Parameters:

• element (QDomElement) –

• context (QgsReadWriteContext) –

Return type:

QgsPointCloudRenderer

createLegendNodes(self, nodeLayer: QgsLayerTreeLayer) → List[QgsLayerTreeModelLegendNode]

Parameters:

nodeLayer (QgsLayerTreeLayer) –

Return type:

List[QgsLayerTreeModelLegendNode]

drawPoint(self, x: float, y: float, color: QColor | Qt.GlobalColor | QGradient, context: QgsPointCloudRenderContext)

Draws a point using a color at the specified x and y (in map coordinates).

maximum(self) → float

Returns the maximum value for attributes which will be used by the color ramp shader.

See also

setMaximum()

See also

minimum()

Return type:

float

minimum(self) → float

Returns the minimum value for attributes which will be used by the color ramp shader.

See also

setMinimum()

See also

maximum()

Return type:

float

pointXY(context: QgsPointCloudRenderContext, ptr: str, i: int) → Tuple[float, float]

Retrieves the x and y coordinate for the point at index i.

pointZ(context: QgsPointCloudRenderContext, ptr: str, i: int) → float

Retrieves the z value for the point at index i.

renderBlock(self, block: QgsPointCloudBlock, context: QgsPointCloudRenderContext)

Parameters:

• block (QgsPointCloudBlock) –

• context (QgsPointCloudRenderContext) –

restoreCommonProperties(self, element: QDomElement, context: QgsReadWriteContext)

Restores common renderer properties (such as point size and screen error) from the specified DOM element.

See also

saveCommonProperties()

save(self, doc: QDomDocument, context: QgsReadWriteContext) → QDomElement

Parameters:

• doc (QDomDocument) –

• context (QgsReadWriteContext) –

Return type:

QDomElement

saveCommonProperties(self, element: QDomElement, context: QgsReadWriteContext)

Saves common renderer properties (such as point size and screen error) to the specified DOM element.

See also

restoreCommonProperties()

setAttribute(self, attribute: str)

Sets the attribute to use for the renderer.

See also

attribute()

Parameters:

attribute (str) –

setColorRampShader(self, shader: QgsColorRampShader)

Sets the color ramp shader function used to visualize the attribute.

See also

colorRampShader()

Parameters:

shader (QgsColorRampShader) –

setMaximum(self, maximum: float)

Sets the maximum value for attributes which will be used by the color ramp shader.

See also

maximum()

See also

setMinimum()

Parameters:

maximum (float) –

setMinimum(self, minimum: float)

Sets the minimum value for attributes which will be used by the color ramp shader.

See also

minimum()

See also

setMaximum()

Parameters:

minimum (float) –

type(self) → str

Return type:

str

usedAttributes(self, context: QgsPointCloudRenderContext) → Set[str]

Parameters:

context (QgsPointCloudRenderContext) –

Return type:

Set[str]