Convert AreaDefinitions to odc geoboxes

continuous_integration/environment.yaml

@@ -29,3 +29,4 @@ dependencies:
   - pytest-lazy-fixture
   - importlib-metadata
   - sphinx-reredirects
+  - odc-geo

pyresample/geometry.py

@@ -1972,6 +1972,19 @@ def _cartopy_proj_params(self):
             return "EPSG:{}".format(self.crs.to_epsg())
         return self.crs.to_proj4()
 
+    def to_odc_geobox(self):
+        """Convert AreaDefinition to ODC GeoBox.
+
+        See: https://odc-geo.readthedocs.io/en/latest/
+        """
+        try:
+            from odc.geo.geobox import GeoBox
+        except ModuleNotFoundError:
+            raise ModuleNotFoundError("Please install 'odc-geo' to use this method.")
+
+        return GeoBox.from_bbox(bbox=self.area_extent, crs=self.crs,
+                                resolution=np.mean([self.pixel_size_x, self.pixel_size_y]), tight=True)
+
     def create_areas_def(self):
         """Generate YAML formatted representation of this area.
 

pyresample/test/test_geometry/test_area.py

@@ -403,6 +403,35 @@ def test_cartopy_crs_latlon_bounds(self, create_test_area):
         latlong_crs = area_def.to_cartopy_crs()
         np.testing.assert_allclose(latlong_crs.bounds, [-180, 180, -90, 90])
 
+    def test_to_odc_geobox(self, stere_area, create_test_area):
+        """Test conversion from area definition to odc GeoBox."""
+        from odc.geo.geobox import GeoBox
+
+        europe = stere_area
+        seviri = create_test_area(
+            {
+                'proj': 'geos',
+                'lon_0': 0.0,
+                'a': 6378169.00,
+                'b': 6356583.80,
+                'h': 35785831.00,
+                'units': 'm'},
+            123,
+            123,
+            (-5500000, -5500000, 5500000, 5500000))
+
+        for area_def in [europe, seviri]:
+            geobox = area_def.to_odc_geobox()
+
+            assert isinstance(geobox, GeoBox)
+
+            # Affine coefficiants
+            af = geobox.affine
+            assert af.a == area_def.pixel_size_x
+            assert af.e == -area_def.pixel_size_y
+            assert af.xoff == area_def.area_extent[0]
+            assert af.yoff == area_def.area_extent[3]
+
     def test_dump(self, create_test_area):
         """Test exporting area defs."""
         from io import StringIO

setup.py

@@ -40,8 +40,16 @@
                   'cf': ['xarray'],
                   'gradient_search': ['shapely'],
                   'xarray_bilinear': ['xarray', 'dask', 'zarr'],
+                  'odc-geo': ['odc-geo'],
                   'tests': test_requires}
 
+all_extras = []
+for extra_deps in extras_require.values():
+    all_extras.extend(extra_deps)
+extras_require['all'] = list(set(all_extras))
+
+setup_requires = ['numpy>=1.10.0', 'cython']
+
 if sys.platform.startswith("win"):
     extra_compile_args = []
 else: