Class: QgsMeshUtils

Provides utility functions for working with mesh data.

Added in version 3.0.

List of all members, including inherited members

Methods

exportRasterBlock

Exports mesh layer's dataset values as raster block

class qgis.core.QgsMeshUtils

Bases: object

exportRasterBlock(layer: QgsMeshLayer, datasetIndex: QgsMeshDatasetIndex, destinationCrs: QgsCoordinateReferenceSystem, transformContext: QgsCoordinateTransformContext, mapUnitsPerPixel: float, extent: QgsRectangle, feedback: QgsRasterBlockFeedback | None = None) → QgsRasterBlock | None

Exports mesh layer’s dataset values as raster block

The function always fetches native mesh and dataset data from data provider and calculates triangular mesh

Parameters:

• layer (QgsMeshLayer) – mesh layer

• datasetIndex (QgsMeshDatasetIndex) – index from layer defining group and dataset (time) to export

• destinationCrs (QgsCoordinateReferenceSystem) – destination/map CRS. Used to create triangular mesh from native mesh

• transformContext (QgsCoordinateTransformContext) – Transform context to transform layer CRS to destination CRS

• mapUnitsPerPixel (float) – map units per pixel for block

• extent (QgsRectangle) – extent of block in destination CRS

• feedback (Optional[QgsRasterBlockFeedback] = None) – optional raster feedback object for cancellation/preview

Return type:

Optional[QgsRasterBlock]

Returns:

raster block with Float.64 values. None on error

Added in version 3.6.