Why I can't use the boolean in SWRL Tab？

Question

Why I can't use the boolean in SWRL Tab？

233yun opened this issue 2 years ago · 2 comments

I try to write some Inspection rules with swrl, OwlProjetUnit(?x) ^ owlhascoordsystem(?x, ?y) ^ OwlGeomSpacePositionCoordSystem(?y)->owlrule1(?x,true) , owlrule1 is a Inspection rule of OwlProjetUnit.
in Ontology model，owlrule1 is define as a object property of the OwlProjetUnit class, and its range is boolean.
SWRL Tab shows that true is invalid, I am confused.

Answer 1 · 2022-05-20T15:52:59.000Z

An OWL object property cannot have a boolean range. Object properties relate two OWL indiviudals.

Answer 2 · 2022-05-21T02:09:40.000Z

Thank you very much for your reply! I set owlrule1 as the data property and solved the problem. Thank you very much for your help!