openmaptiles

History

Brian Sperlongano 0cff3449b5

This PR implements non-blocking updates in the park layer.

The approach was to use the `REFRESH MATERIALIZED VIEW CONCURRENTLY` feature in postgres.  In order to achieve this, a unique index was added on the z4 dissolved park area table.  The `ST_Union` / `ST_Dump` sequence was changed to an explicit cluster DB scan (an equivalent operation) so that a unique osm ID could be generated from each dissolved polygon.

Below is a screen shot from Idaho, USA showing that the dissolved z4 still works as expected.

![image](https://user-images.githubusercontent.com/3254090/142341513-588045f0-7757-4acd-99e5-a50bbe6b0682.png)

2021-11-24 11:17:29 +01:00

etl_diagram.png

Fix park layer ETL diagram (#1278 )

2021-10-25 08:12:17 -04:00

mapping_diagram.png

Upgrade to omt-tools v6, Imposm 0.11.1 and migrate SQL (#1246 )

2021-10-14 11:38:28 -04:00

mapping.yaml

Implement park rendering at z4-5 (#1160 )

2021-09-01 07:20:52 +02:00

park.sql

Remove blank name tags (#1307 )