Created
February 25, 2020 17:31
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example of axis mapping strategy effects on GDAL 3.0
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| from osgeo import osr | |
| wgs84 = osr.SpatialReference() | |
| wgs84.ImportFromEPSG(4326) | |
| utm10 = osr.SpatialReference() | |
| utm10.ImportFromEPSG(26910) | |
| # Play with these settings, you'll find the utm10 strategey makes no difference bu | |
| # the wgs84 one needs traditional order | |
| wgs84.SetAxisMappingStrategy(osr.OAMS_TRADITIONAL_GIS_ORDER) | |
| utm10.SetAxisMappingStrategy(osr.OAMS_TRADITIONAL_GIS_ORDER) | |
| wgs84_to_utm10_transformer = osr.CreateCoordinateTransformation(wgs84, utm10) | |
| utm_10to_wgs84_transformer = osr.CreateCoordinateTransformation(utm10, wgs84) | |
| base_wgs84_point = (-123, 50) | |
| utm_10_point = wgs84_to_utm10_transformer.TransformPoint(*base_wgs84_point)[0:2] | |
| wgs84_point = utm_10to_wgs84_transformer.TransformPoint(*utm_10_point)[0:2] | |
| print('base: %s', base_wgs84_point) | |
| print('utm transform: %s', utm_10_point) | |
| print('wgs back transform: %s', wgs84_point) |
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