Class: QgsMeshUtils

Provides utility functions for working with mesh data.

Added in version 3.0.

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.