The base map¶

Everything that isn't a road comes from the same duckOSM database (its features.* layers), styled like openstreetmap.org. No tile server, no API key.

Monaco's coast: the sea, the port, buildings and parks — The coast at zoom 14: sea, port, parks, built-up areas

Central Monte-Carlo with parking, bus stops and crossings — Monte-Carlo at zoom 17.6: buildings, gardens, parking, bus stops, crossings

The layers¶

In drawing order, bottom first. Each has a row in the LAYERS box, so it can be hidden.

Layer	From duckOSM	Shows	From zoom
`ocean`	`features.ocean`	the sea
`landcover`	`features.land` (+ school, hospital and sports grounds from `sites`)	parks, grass, forest, residential and industrial land, cemeteries, beaches…; forests, orchards, cemeteries, wetland and scrub get openstreetmap.org's textures
`water`	`features.water_polygons`	lakes, rivers, basins, docks
`waterways`	`features.water_lines`	rivers, streams, canals, ditches
`buildings`	`features.buildings`	building footprints	15
`railways`	`features.streets`	rail, tram, light rail, subway, funicular, monorail
`parking`	`features.sites`	car parks	15
`parking_p`	`features.sites`	a "P" on each car park	16
`bus_station`	`features.sites`	bus station footprints	15
`platform`	`features.sites`	transit platforms
`traffic_signals`	`features.traffic`	traffic lights	16
`crossings`	`features.traffic`	pedestrian crossings, turned to lie across their road	16
`bus_stations`	`features.public_transport`	bus stops	16
`train_stations`	`features.public_transport`	railway stations and halts	12
`bicycle`	`features.pois`	bicycle rental	16

The roads are drawn between the area layers and the points: the points (icons) are always on top.

The sea¶

OpenStreetMap has no sea polygons, only coastlines. duckOSM fills features.ocean from Overture Maps' ocean polygons (built from OpenStreetMap's coastline) while it builds the database. A database built offline, or with options.sea: false, has no sea: the coast's water is then land-coloured.

Choose the layers¶

ms.render_map(db, layers=["buildings", "crossings"])   # just these
ms.render_map(db, layers=False)                        # roads only

mapstyle monaco.duckdb --no-layers

A database built without the base map (duckosm build --no-features) gives the roads only, with a logged hint.

Clicks, tooltips and kinds¶

Each layer can be clickable (a popup with its name and kind), show a hover tooltip, or neither:

ms.render_map(db, interaction={"crossings": {"tooltip": True}, "landcover": {"clickable": True}})

From JavaScript, rsSetInteraction, rsSetKinds (only some kinds of a layer, e.g. just parks) and roadstyle's rsSetOverlay change them on the page (JavaScript API).

Change the look¶

The base map is data: styles/layers.yaml says which layers, in which order, with which filter; styles/osm_carto.yaml says how each looks (colours by kind, outlines, textures, icons, zoom ranges). See Styles.

The raster maps of roadstyle (CARTO Voyager and Positron, OpenStreetMap, satellite) stay in the base-map switcher (top right) for comparison; they are loaded from the web.