https://github.com/tebben/topobaas
quickly thrown together topo game to guess dutch places
https://github.com/tebben/topobaas
Last synced: 3 months ago
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quickly thrown together topo game to guess dutch places
- Host: GitHub
- URL: https://github.com/tebben/topobaas
- Owner: tebben
- Created: 2023-10-21T11:21:18.000Z (over 1 year ago)
- Default Branch: master
- Last Pushed: 2024-11-22T09:25:26.000Z (6 months ago)
- Last Synced: 2025-01-09T04:09:19.836Z (5 months ago)
- Language: Svelte
- Size: 436 KB
- Stars: 0
- Watchers: 2
- Forks: 0
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
Awesome Lists containing this project
README
# topobaas
A quickly thrown together small Dutch topo game since woonplaatsgame seems to be offline.
visit [TOPOBAAS](https://tebben.github.io/topobaas) on github pages.
## Woonplaats data
We get places from the BAG and rank a place by the amount of BAG objects in a `woonplaats`, we can use the rank for the diffuculty level. The ranking is not perfect yet...
Query to create GeoJSON.
```sql
CREATE TABLE woonplaats_latest AS
WITH places AS (
SELECT
t1.gid as id,
t1.woonplaatsnaam as name,
t1.woonplaatsstatus,
t1.documentdatum,
t1.documentnummer,
t1.tijdstipregistratie,
t1.geovlak as geom,
(SELECT COUNT(*) FROM bagactueel.pand WHERE ST_Contains(t1.geovlak, pand.geovlak)) AS object_count
FROM
bagactueel.woonplaats t1
LEFT JOIN
bagactueel.woonplaats t2
ON
t1.woonplaatsnaam = t2.woonplaatsnaam AND t1.tijdstipregistratie < t2.tijdstipregistratie
WHERE
t2.woonplaatsnaam IS NULL
)
SELECT
id,
name,
woonplaatsstatus,
documentdatum,
documentnummer,
tijdstipregistratie,
geom,
object_count
FROM places;
SELECT
jsonb_build_object(
'type', 'FeatureCollection',
'features', jsonb_agg(
jsonb_build_object(
'type', 'Feature',
'properties', jsonb_build_object(
'id', a.id,
'name', a.name,
'rank', a.rank
),
'geometry', a.geom
)
)
) AS geojson
FROM (
SELECT
id,
name,
geom,
NTILE(20) OVER(ORDER BY object_count) AS rank
FROM (
SELECT
id,
name,
ST_AsGeoJSON(ST_Transform(ST_SimplifyPreserveTopology(geom, 400), 4326), 5)::json as geom,
object_count,
ROW_NUMBER() OVER (PARTITION BY name ORDER BY id DESC) as rn
FROM woonplaats_latest
) sub
WHERE rn = 1
) as a;
```