Exemple #1
0
    def test_utm_to_lonlat(self):
        """
        Test that coordinates in one CRS are correctly transformed
        from utm into lonlat
        This came about with GDAL3 and Proj6, where the native axis
        mapping of a CRS is respected, meaning that an x,y input and
        output is dependent on the CRS axis.
        We'll instead enforce the x,y axis mapping strategy.
        """
        shape = (3, 2)
        origin = (669700, 6111700)
        ggb = GriddedGeoBox(shape, origin, crs="EPSG:32755")

        lon = 148.862561
        lat = -35.123064
        easting = 669717.105361586
        northing = 6111722.038508673

        to_crs = osr.SpatialReference()
        to_crs.ImportFromEPSG(4326)

        lon, lat = ggb.transform_coordinates((easting, northing), to_crs)

        self.assertAlmostEqual(lon, 148.862561)
        self.assertAlmostEqual(lat, -35.123064)
Exemple #2
0
    def test_lonlat_to_utm(self):
        """
        Test that coordinates in one CRS are correctly transformed
        from lonlat into utm
        This came about with GDAL3 and Proj6, where the native axis
        mapping of a CRS is respected, meaning that an x,y input and
        output is dependent on the CRS axis.
        We'll instead enforce the x,y axis mapping strategy.
        """
        shape = (3, 2)
        origin = (150.0, -34.0)
        ggb = GriddedGeoBox(shape, origin)

        lon = 148.862561
        lat = -35.123064

        to_crs = osr.SpatialReference()
        to_crs.ImportFromEPSG(32755)

        easting, northing = ggb.transform_coordinates((lon, lat), to_crs)

        self.assertAlmostEqual(easting, 669717.105361586)
        self.assertAlmostEqual(northing, 6111722.038508673)