Add support for OCN files ?

[Skealz]

I tried

>>> import safe_s1
>>> s = safe_s1.Sentinel1Reader("/home/datawork-cersat-public/cache/project/mpc-sentinel1/data/esa/sentinel-1a/L2/IW/S1A_IW_OCN__2S/2023/001/S1A_IW_OCN__2SDV_20230101T005639_20230101T005702_046583_059524_F6EC.SAFE")
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/home1/datahome/tcevaer/micromamba/envs/ocn_inversion/lib/python3.10/site-packages/safe_s1/reader.py", line 66, in __init__
    raise Exception('case not handled')
Exception: case not handled

Which fails because

        if "SLC" in self.path or "GRD" in self.path:
            self.manifest_attrs = self.xml_parser.get_compound_var(
                self.manifest, "safe_attributes_slcgrd"
            )
        elif "SL2" in self.path:
            self.manifest_attrs = self.xml_parser.get_compound_var(
                self.manifest, "safe_attributes_sl2"
            )
        else:
            raise Exception("case not handled")

But a manifest.safe is available at the specified path.

[agrouaze]

Thanks for reporting @Skealz , indeed it is expected result.
For me supporting Level-2 OCN is low priority since the measurement are netcdf files with global attributes.
If you see missing information in measurements that are present in annotation or manifest.safe let me know.
Note: the Sentinel-1 output format will evolve to ZARR in a near future.