<div dir="ltr"><div>Hi,</div><div><br></div><div>
I have input polygon in epsg:31468 which I need to transform to epsg:4326 <br></div><div><br></div><div>My current code boils down to this:</div><div><br></div><div>project = pyproj.Transformer.from_crs("EPSG:31468","EPSG:4326", always_xy=True)</div><div>poly = transform(project.transform, poly)</div><div><br></div><div>The problem however is that the resulting polygons have a 1-2 meter offset according to visual inspection in QGIS. On reddit, someone suggested that I might also need a datum
transformation, on the pyproj4 issue tracker someone said, that datum transformations are no longer needed in PROJ 6+ and that I should ask for clarification here. So here I am ;-)</div><div><br></div><div>Can anyone shed any light on why I get these offsets and what I can do to fix this?<br></div><div>There's no offset if I manually reproject this in QGIS and compare it with the original.<br></div><div><br></div><div>Thanks,</div><div>Armin<br></div></div>