qgis-core-coordinate-systems
Installation
SKILL.md
qgis-core-coordinate-systems
Quick Reference
Core CRS Classes
| Class | Purpose | Key Methods |
|---|---|---|
QgsCoordinateReferenceSystem |
Represents a spatial reference system | isValid(), authid(), isGeographic(), mapUnits() |
QgsCoordinateTransform |
Transforms coordinates between two CRS | transform(), transformBoundingBox() |
QgsCoordinateTransformContext |
Project-level datum transformation settings | Used as parameter for transforms |
QgsDistanceArea |
Measures distances and areas in any CRS | measureLine(), measureArea(), setEllipsoid() |