for i in range(atlas_layout.count()): atlas_layout.setCurrentFeature(i) # Option 1: Single multi-page PDF exporter.exportToPdf(f"C:/GIS/atlas_page_i.pdf", QgsLayoutExporter.PdfExportSettings())
PyQGIS is a Python library that provides a set of APIs (Application Programming Interfaces) that allow developers to interact with QGIS. It allows developers to build custom plugins that can extend the functionality of QGIS, automate tasks, and integrate QGIS with other applications. PyQGIS is based on the Qt framework, which is a popular C++ framework for building cross-platform applications.
: QGIS uses its own bundled Python environment. pyqgis programmer 39s guide 3 pdf work
settings = Qgs3DMapSettings() settings.setCrs(QgsProject.instance().crs()) settings.setTerrainVerticalScale(1.0) settings.setTerrainGenerator(None) # No terrain, just features
While the book provides the programming foundation, specific tasks for PDF report generation in QGIS typically involve the following components: for i in range(atlas_layout
To pull a specific subset of features based on attribute values, use QgsFeatureRequest combined with standard SQL syntax expressions:
To loop through every feature in a layer without loading the entire dataset into memory, use getFeatures() : : QGIS uses its own bundled Python environment
from qgis.core import QgsRasterLayer raster_path = "/path/to/data/dem.tif" raster_layer = QgsRasterLayer(raster_path, "Elevation DEM") if not raster_layer.isValid(): print("Raster failed to load!") else: # Print spatial metadata print(f"Width: raster_layer.width() px") print(f"Height: raster_layer.height() px") print(f"Extent: raster_layer.extent().toString()") Use code with caution. Querying Pixel Values