Index score integration

[osundwajeff]

Default Index Score Workflow Implementation

Tickets #318 and #319

Summary of Changes

This update introduces a concrete implementation of the DefaultIndexScoreWorkflow, a class responsible for executing the "Use Default Index Score" workflow in QGIS. The workflow allows for the creation of raster masks for features within a bounding box layer, combining those rasters into a VRT (Virtual Raster Tile), and adding the VRT to the QGIS map.

Key Features:

• Workflow Execution:

  • Iterates through bounding box (self.bboxes_layer) features.
  • Creates individual raster masks using the create_raster method.
  • Combines all raster masks into a single VRT using the create_raster_vrt method.

• Cancellation Handling:

  • The workflow checks for cancellation using self.feedback.isCanceled() before starting long-running tasks (e.g., raster creation and VRT generation) to ensure it can stop if necessary.

• Dynamic Layer Naming:

  • The VRT layer is added to the QGIS project with a dynamic name that replaces underscores (_) in the ID attribute with spaces for readability.

Methods:

1. execute: Manages the overall workflow, including logging, raster mask creation, and VRT generation.
2. create_raster: Generates a raster mask for a given feature's geometry and saves it as a .tif file.
3. create_raster_vrt: Combines all generated raster masks into a VRT and adds it to the QGIS map.

Error Handling:

• In case of missing raster masks, it logs a warning and skips VRT generation.
• If the VRT layer cannot be added to the map, it logs a critical error.

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VRT function and Rescaled index score to range [ 0 - 5 ]

VRT -1:

VRT-2:

VRT-3:

VRTs added to map (For the three indexes):

Directory structure:

lower level: