Re: [sdw] Noting that the Spatial data on the Web working group may not exist in a few months time... (#1436)

> From my perspective there is a general deficiency with CRS expression in GeoSPARQL (and the wider Semantic Web) that needs to be addressed. There is yet too much ambiguity to allow for automated interpretation of CRSs. Linked to that is the emergence of DGGSs as replacement for both literal types and CRSs. Looking forwards to contribute. Best regards. [0] https://github.com/glosis-ld/glosis [1] https://linked-sdi.com/


I have been working in similar directions and would also like to have a CRS ontology/vocabulary/JSON-LD context published. 
Right now the work seems to have somewhat stalled, because of several reasons, but I would be eager to pick it up again.

We started an OGC Whitepaper as a first start (https://github.com/opengeospatial/ontology-crs) and I tried to create vocabularies from existing databases (https://github.com/situx/proj4rdf/  , browsable in HTML here (https://situx.github.io/proj4rdf/data/def/crs/EPSG/0/9742/index.html)), which could be used to refine the model.

As far as GeoSPARQL is concerned we would like to link to definitions of CRS in RDF, but the creation of the appropriate vocabulary is separate from GeoSPARQL.

If people want, this could also be an activity to pursue within the Spatial Data On the Web Working Group, but I believe it would be crucial to find a group of people committing to this in a foreseeable timeframe.


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Received on Tuesday, 28 November 2023 14:40:36 UTC