sec_interp.core.services.geology_service module

class sec_interp.core.services.geology_service.GeologyService

Bases: object

Service for generating geological profiles.

This service handles the extraction of geological unit intersections along a cross-section line.

generate_geological_profile(line_lyr: qgis.core.QgsVectorLayer, raster_lyr: qgis.core.QgsRasterLayer, outcrop_lyr: qgis.core.QgsVectorLayer, outcrop_name_field: str, band_number: int = 1) → list[GeologySegment]

Generate geological profile data by intersecting the section line with outcrop polygons.

Extracts geological unit intersections along the cross-section line, calculates elevations from the DEM, and returns a list of segments.

Parameters:

  • line_lyr – The QGIS vector layer representing the cross-section line.

  • raster_lyr – The Digital Elevation Model (DEM) raster layer.

  • outcrop_lyr – The QGIS vector layer containing geological outcrop polygons.

  • outcrop_name_field – The attribute field name for geological unit names.

  • band_number – The raster band to use for elevation sampling (default 1).

Returns:

A list of GeologySegment objects, sorted by distance along the section.

Return type:

GeologyData

Raises:

  • ValueError – If the line layer has no features or invalid geometry.

  • RuntimeError – If the intersection processing fails.