no worries Greg, good to see progress and plenty of new features in the latest version of spatial data support in Apache Jena. Are currently all filter functions listed in the documentation supported in the latest Apache Jena release?
In the Apache Jena GeoSPARQL 3.17 release I am using here the filter function spatialF:convertLatLon doesn't seem to work as intended for binding new variables. Is Andy now working mostly on the Jena geosparql release? If so I will direct my question to Andy. Marco On Wed, Jan 30, 2019 at 10:55 AM Greg Albiston <[email protected]> wrote: > Hi Marco, > > I've just realised I put "Bruno" in the below email when I was actually > referring to your feedback. > > Apologies for the mistake, > > Greg > > > -------- Forwarded Message -------- > Subject: GeoSPARQL Module > Date: Wed, 30 Jan 2019 10:26:13 +0000 > From: Greg Albiston <[email protected]> <[email protected]> > Reply-To: [email protected] > To: [email protected] > > Hello, > > Just to update on the work for the GeoSPARQL module. > > I've setup the previous property and filter functions from the > jena-spatial module. These can be used with both Lat/Lon geo predicates > and the geometry literals of GeoSPARQL. There are also some additional > filter functions added for convenience, e.g. convert lat/lon values to > geometry literals and calculating distances. > > A spatial index is used for these functions on a per dataset basis. If > the spatial index is available then the GeoSPARQL property functions > will use it. The GeoSPARQL property functions will also do a fall back > test for geo predicates if no geometry literals are found so there is > some accomodation for those wanting to stay with geo predicates, but > only a few spatial relations are valid for point-point relations. > > Methods for converting datasets to GeoSPARQL structure are also > included. I've also tried to incorporate Bruno's previous feedback with > more consistent ExprEvalExceptions within the functions. > > I will send out a message on the users mailing list to invite people to > test the GitHub project as there was some interest in assisting. > > What is the process for creating the new module within Jena? > > Thanks, > > Greg > > -- --- Marco Neumann KONA
