Protégé not showing Properties of entities

[rdk]

Hi Jean-Baptiste,

I have created an ontology from scratch using Owlready2.
Attached is a reduced version of it:
test_geom.owl

However, when I open the ontology in Protégé, the entities appear without (object/data) properties.
Protégé_missing_properties.png

Also, Owlready2 didn't assign inverse properties.

Thank you in advance,
Rui

[Jiba]

Hi,

The problem comes from the IRI name of your ontology. You named it "C:/Users/R/Google Drive/PhD/PhD_ONTO-GRAMMARS/00_DEVELOPER/00_Bottle_Ontology/test_geom.owl". However, many tools (including Protege) expect the IRI of an ontology to starts with http://

You should also remove the space between Google and Drive.

I renamed it "http://test.org/Users/R/GoogleDrive/PhD/PhD_ONTO-GRAMMARS/00_DEVELOPER/00_Bottle_Ontology/test_geom.owl", and the data properties values appear as expected.

Notice that you do not need the IRI to correspond to a real URL available online : Owlready (and other tools) use local copies when available.

Owlready2 accepts a filename when creating an ontology (get_ontology(filename)), but only for loading the ontology. When .load() is called, the IRI is replaced with the real IRI extracted from the file.

Best regards,
Jean-Baptiste Lamy
MCF, LIMICS, Université Paris 13

[rdk]

Hi Jean-Baptiste,

Thank you for your quick reply!
I have set onto_path[0] to an IRI starting with http:// as you suggested and Protégé started working as expected.
Reasoning under Owlready also started to work.

Once again, thank you.
Best regards,
Rui