Tilezen tileserver的評論
Tilezen tileserver Language: Python Layer definitions: SQL in jinja2 templates, YAML Vector tile formats: Mapbox Vector Tiles, TopoJSON, and GeoJSON Data source support: PostGIS Tilezen tileserver was written by Mapzen to replace their TileStache-based vector tile generation. Having been written by developers who wrote previous vector tile servers, it combines ideas and functionality other options don’t have. The datasource definitions are written in SQL + YAML, a common choice, but unlike other options, the SQL is in its own files which are preprocessed by the jinja2 templating engine. This adds some complexity, but a great deal of power. Selecting different features by zoom level normally requires repetative SQL and lengthy UNION ALL queries, but the preprocessing allows queries to be written more naturally. Tileserver’s unique feature is the post-processing capabilities it offers. This allows vector tiles to be operated on after the database, altering geometries, changin...