how to express point geometry in non wgs84

[pvgenuchten]

This issue is in between csvw and geosparql

i have a case where data is in a non wgs84 projection

x	y	crs	...
100000	350000	28992
90000	340000	28992
110000	360000	28992

in a wgs84 projection i would annotate X as geo:long and Y as geo:lat, however the common spatial ontologies (geosparql, schema.org, wgs84) seem to not support a simple point geometry with: x, y, (z), crs

I could use a geosparql wkt encoding to express 3 concatenated columns as a point geometry

"<http://www.opengis.net/def/crs/EPSG/0/28992> POINT(155000 463000) " ^^geo:wktLiteral

Can I do something like this?

{
  "name": "wkt_geometry",
  "virtual": true,
  "propertyUrl": "geo:Geometry",
  "valueUrl": "<http://www.opengis.net/def/crs/EPSG/0/{crs}> POINT({x} {y})"
}

if so, is there any way to indicate the geo:wktLiteral type for the generated literal?

See also https://github.com/w3c/sdw-sosa-ssn/issues/453