Add WGS84 coordinates and simplified geometries to admin units

.github/workflows/shacl-validation.yml

@@ -57,9 +57,9 @@ jobs:
             domain=$(basename "$(dirname "$f")")
             echo "::group::$f"
             case "$(basename "$f")" in
-              # overlay files (owl:sameAs/foaf:depiction onto other files' graphs):
-              # graph invariants intentionally absent, so skip validate.sh
-              alignments.trig|photos.trig)
+              # overlay files (owl:sameAs/foaf:depiction/geo onto other files'
+              # graphs): graph invariants intentionally absent, so skip validate.sh
+              alignments.trig|photos.trig|*-geo.trig)
                 etl/lib/shacl.sh "etl/shapes/$domain.ttl" "$f" "$BASE" \
                   || { rc=1; echo "::error file=$f::SHACL validation failed"; echo "- FAIL: $f" >> "$GITHUB_STEP_SUMMARY"; } ;;
               *)

.gitignore

@@ -4,6 +4,7 @@ etl/tools/.venv/
 
 # bulk generated data — regenerate with `make -C etl admin-units`
 datasets/current/admin-units/settlements.trig
+datasets/current/admin-units/settlements-geo.trig
 datasets/current/admin-units/streets.trig
 __pycache__/
 

CLAUDE.md

@@ -203,6 +203,24 @@ plain `SELECT DISTINCT` won't, since the rows differ in the image cell.
   header. Only base-internal IRIs relativize; external URIs (Wikidata, Commons, lrs.lt,
   EU tables, schema.org, mailto/tel) stay absolute. Round-trip proof:
   `riot --base=$BASE --output=nquads file.trig | sort` is base-independent.
+- **Admin-unit coordinates live in `*-geo.trig`** (`ltlod-geo`, from the AR spatial
+  `gra*` models), merged on load like `alignments.trig` — the committed level
+  `*.trig` carry no geo. LDH map mode (`ac:MapMode`) plots `geo:lat`+`geo:long`
+  (WGS84 point marker) and/or `gsp:asWKT` (GeoSPARQL polygon). **⚠ EPSG:3346 (LKS-94)
+  axis order is (Northing, Easting)**: the source WKT stores the ~6·10⁶ northing
+  first, ~3–6·10⁵ easting second, so `ltlod-geo` feeds pyproj `(easting, northing)`
+  under `always_xy=True` → `(lon, lat)`. Every point is bounds-checked against
+  Lithuania's bbox — a swapped axis lands far outside and aborts. Sanity check:
+  Vilnius ≈ lat 54.6–54.7, lon 25.2–25.3.
+- **Geometries are `gsp:asWKT` on `#this`, simplified, coarse levels only**
+  (`ltlod-geo --simplify <metres>`, set per level in `admin-units/Makefile`). The WKT
+  must be **bare WGS84 lon-lat** (no leading `<crs>` URI — OpenLayers' `ol.format.WKT`
+  can't parse one) typed `http://www.opengis.net/ont/geosparql#wktLiteral`; put it
+  directly on `#this` (not a `geo:hasGeometry` node) so the map feature id is the unit
+  URI. LDH does **no** client-side simplification (raw polygons are ~160 MB), hence
+  Douglas–Peucker in ETL. No LTLOD XSL change needed — `map.xsl` ships via the
+  imported stock `client.xsl`; the committed coarse `*-geo.trig` hold points + WKT,
+  settlements stay point-only.
 - **Fuseki ports are never published to the host** — query via
   `https://localhost:4443/sparql` or from inside the network:
   `docker compose exec linkeddatahub curl http://varnish-end-user/ds/`.

app/ns.ttl

@@ -9,11 +9,12 @@
 # semantics (same approach as the northwind-traders demo app).
 #
 # ac:mode picks the layout LDH renders the projected entities with (ac:ListMode
-# default, else Table/Grid/Map/…). Views that project image-bearing entities —
-# persons (foaf:depiction portraits from lrs.lt) and admin units (Wikimedia
-# photos/coats of arms via the Wikidata alignment) — use ac:GridMode so LDH lays
-# them out as a thumbnail grid (bs2:ContainerGrid → foaf:depiction per card).
-# Imageless targets (Seimas org-units) keep the default list.
+# default, else Table/Grid/Map/…). Admin units carry WGS84 geo:lat/geo:long (from
+# the AR-spatial *-geo.trig), so :SubUnits uses ac:MapMode — LDH plots each unit as
+# a map marker (RDFXML2GeoJSON keys on geo:lat+geo:long). Views that project
+# image-bearing persons (foaf:depiction portraits from lrs.lt) use ac:GridMode so
+# LDH lays them out as a thumbnail grid (bs2:ContainerGrid → foaf:depiction per
+# card). Imageless targets (Seimas org-units) keep the default list.
 
 @prefix :       <#> .
 @prefix ldh:    <https://w3id.org/atomgraph/linkeddatahub#> .
@@ -131,7 +132,7 @@ org:memberDuring a owl:ObjectProperty ;
 :SubUnits a ldh:View ;
     dct:title "Sudedamieji vienetai"@lt, "Constituent units"@en ;
     spin:query :SelectSubUnits ;
-    ac:mode ac:GridMode ;
+    ac:mode ac:MapMode ;
     rdfs:isDefinedBy : .
 
 :SelectSubUnits a sp:Select ;

app/root.ttl

@@ -12,14 +12,15 @@
     rdf:_1 <#intro> ;
     rdf:_2 <#counties-intro> ;
     rdf:_3 <#counties-block> ;
-    rdf:_4 <#chart-factions-intro> ;
-    rdf:_5 <#chart-factions-block> ;
-    rdf:_6 <#parties-intro> ;
-    rdf:_7 <#parties-block> ;
-    rdf:_8 <#table-chairs-intro> ;
-    rdf:_9 <#table-chairs-block> ;
-    rdf:_10 <#browse-intro> ;
-    rdf:_11 <#select-children> .
+    rdf:_4 <#counties-map-block> ;
+    rdf:_5 <#chart-factions-intro> ;
+    rdf:_6 <#chart-factions-block> ;
+    rdf:_7 <#parties-intro> ;
+    rdf:_8 <#parties-block> ;
+    rdf:_9 <#table-chairs-intro> ;
+    rdf:_10 <#table-chairs-block> ;
+    rdf:_11 <#browse-intro> ;
+    rdf:_12 <#select-children> .
 
 # rdf:_1 — mission intro (title/description already render above)
 
@@ -63,7 +64,19 @@ WHERE
 }
 ORDER BY ?label""" .
 
-# rdf:_4 / rdf:_5 — faction sizes bar chart
+# rdf:_4 — the same counties as a map. Admin units carry WGS84 geo:lat/geo:long
+# (AR-spatial *-geo.trig, merged on load); ac:MapMode plots each apskritis as a
+# marker over OpenStreetMap. Reuses <#counties-query> — LDH DESCRIBEs each ?unit
+# and reads its coordinates.
+
+<#counties-map-block> a ldh:Object ;
+    rdf:value <#counties-map-view> .
+
+<#counties-map-view> a ldh:View ;
+    spin:query <#counties-query> ;
+    ac:mode ac:MapMode .
+
+# rdf:_5 / rdf:_6 — faction sizes bar chart
 
 <#chart-factions-intro> a ldh:XHTML ;
     rdf:value """<div xmlns="http://www.w3.org/1999/xhtml">
@@ -105,7 +118,7 @@ WHERE
 GROUP BY ?faction
 ORDER BY DESC(?members)""" .
 
-# rdf:_6 / rdf:_7 — parties that nominated Seimas members (clickable list)
+# rdf:_7 / rdf:_8 — parties that nominated Seimas members (clickable list)
 
 <#parties-intro> a ldh:XHTML ;
     rdf:value """<div xmlns="http://www.w3.org/1999/xhtml">
@@ -138,7 +151,7 @@ WHERE
 }
 ORDER BY ?label""" .
 
-# rdf:_8 / rdf:_9 — committee chairs (single entity type: the chair persons)
+# rdf:_9 / rdf:_10 — committee chairs (single entity type: the chair persons)
 
 <#table-chairs-intro> a ldh:XHTML ;
     rdf:value """<div xmlns="http://www.w3.org/1999/xhtml">
@@ -181,7 +194,7 @@ WHERE
 }
 ORDER BY ?person""" .
 
-# rdf:_10 — browse prompt, then rdf:_11 — the container listing (LAST)
+# rdf:_11 — browse prompt, then rdf:_12 — the container listing (LAST)
 
 <#browse-intro> a ldh:XHTML ;
     rdf:value """<div xmlns="http://www.w3.org/1999/xhtml">