It used to be all on Google Code. I believe Google folded that site a few years ago. I will have a look through my backups. But to be frank it would be straightforward to implement nowadays and the old code would be pre Jena 3.
You might be able to get at some of the pre 2007 stuff by way of archive.org https://web.archive.org/web/20110710100953/http://geosparql.org/ Keep in mind I came with a background in 3D queries back in 1996. So the Jena 2D spatial stuff was quick for me to implement. The most challenging part was to hookup the functions to the RDF query engine back in 2002 with what was available in RDQL (a precursor to SPARQL) in Jena. This part is well documented nowadays with what is sometimes dubbed as Jena property functions or magic properties in SPARQL. I am currently working again with a 3D extension to SPARQL but this is limited to a custom implementation (and not in line with OGC GeoSPARQL) in a client project. Let's discuss in more detail, you might be flying in no time. Marco On Sat, Jan 6, 2024 at 12:00 PM Claude Warren <cla...@xenei.com> wrote: > Marco, > > Is your earlier code available in a repository somewhere? I'd love to get > a head start on the functions. > > Claude > > On Sat, Jan 6, 2024 at 12:43 PM Marco Neumann <marco.neum...@gmail.com> > wrote: > > > yes, a lot of the geosparql functions will push you towards geo. > > > > It might be better to just reuse the existing low level functions. My > first > > spatial implementation for Jena in 2006 made use of the JTS Topology > Suite. > > > > JTS is still used in Jena today to run some of the low level evaluation > > mentioned above but can also conveniently be used for X,Y data. I believe > > this might just do the job for your use case. > > > > Marco > > > > > > > > > > > > > > > > . > > > > On Sat, Jan 6, 2024 at 11:15 AM Claude Warren <cla...@xenei.com> wrote: > > > > > Background: I am building an "autonomous chair side table" for my > wife. > > > The goal is to have the table carry her tea from the kitchen to > whatever > > > room she is in. As part of this project I am building a reasoning > system > > > that builds a map based on various inputs (that I call scanners). I > > store > > > all the data in an RDF graph, because all data is a graph and I need to > > be > > > able to annotate it in ways I have not discovered yet. > > > > > > So basically I get sensor data that tells me an obstacle appears at a > > > location. That goes into the system initially as a point, however > > > processing may group it with other points using a convex hull > calculation > > > to convert a point cloud to an obstacle. > > > > > > I need to be able to determine if a path of a specific with (modeled > as a > > > line with a rounded-end buffer) can traverse the space between 2 points > > > without touching the obstacles. > > > > > > So the functions I have been playing with are: > > > > > > - Geof.SF_OVERLAPS > > > - Geof.SF_INTERSECTS > > > - Geof.SF_TOUCHES > > > - Geof.DISTANCE_NAME > > > - SpatialExtension.NEARBY > > > > > > I may just revert to writing a couple of filter functions to do what I > > > want, but I was trying to learn the existing library. > > > > > > Claude > > > > > > On Sat, Jan 6, 2024 at 10:47 AM Marco Neumann <marco.neum...@gmail.com > > > > > wrote: > > > > > > > In terms of geo you would talk about some sort of equidistant > > projection > > > > that is available via the CRS/SRS.This is currently implemented with > > > Apache > > > > SIS in Jena. > > > > > > > > But it sounds like geo isn't really your thing here, so in conclusion > > > > geosparql isn't either as it's all about geo data. > > > > > > > > What type of functions (access methods) would you like to perform on > > the > > > > data? > > > > > > > > > > > > > > > > On Sat, Jan 6, 2024 at 8:24 AM Claude Warren <cla...@xenei.com> > wrote: > > > > > > > > > Yes just x and y on a flat surface. > > > > > > > > > > On Sat 6 Jan 2024, 00:45 Marco Neumann, <marco.neum...@gmail.com> > > > wrote: > > > > > > > > > > > Can you give an example? you just want to use x and y instead of > > > WGS84 > > > > > > coordinates? > > > > > > > > > > > > On Fri, Jan 5, 2024 at 11:28 PM Claude Warren <cla...@xenei.com> > > > > wrote: > > > > > > > > > > > > > I want to use the geospatial capabilities of Jena but without > the > > > > > global > > > > > > > shape. I am looking for a planar geometry (flat, like a small > > > scale > > > > > > map). > > > > > > > Is there a way to specify this? > > > > > > > > > > > > > > Claude > > > > > > > > > > > > > > -- > > > > > > > LinkedIn: http://www.linkedin.com/in/claudewarren > > > > > > > > > > > > > > > > > > > > > > > > > -- > > > > > > > > > > > > > > > > > > --- > > > > > > Marco Neumann > > > > > > > > > > > > > > > > > > > > > > > -- > > > > > > > > > > > > --- > > > > Marco Neumann > > > > > > > > > > > > > -- > > > LinkedIn: http://www.linkedin.com/in/claudewarren > > > > > > > > > -- > > > > > > --- > > Marco Neumann > > > > > -- > LinkedIn: http://www.linkedin.com/in/claudewarren > -- --- Marco Neumann
