2 votes

Loading Geospatial RDF in Virtuoso?

The problem seems to come from your Geometry declaration. Usually, the geometry is simply formated as : "<http://www.opengis.net/def/crs/OGC/1.3/CRS84> Point(-83.4 34.4)" Try to replace your :...
Gilles-Antoine Nys's user avatar
1 vote

Intersection of geometries as GeoSPARQL result

It is actually not possible with GeoSPARQL. GeoSPARQL is using java functions that are called by PREFIX geof: <http://www.opengis.net/def/function/geosparql/> What I recommend is the ...
Gilles-Antoine Nys's user avatar
1 vote

bif:st_within set the correct tolerance

_tolerance_ is tacitly expressed in the unit of the requested data. So you need to be aware of the different units in which your data are expressed and be sure that you do not compare different unit ...
Gilles-Antoine Nys's user avatar
1 vote

bif:st_within set the correct tolerance

ST_Within tells you if a geometry is inside or touching another. So if you want to know if a point is within 10 km of another point then the point could be buffered to 10 km (or if you have a polygon,...
kttii's user avatar
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