3Liz

• French company
• Open Source forever
• Core contributors in QGIS, server side mainly
• ♥ QGIS Desktop ♥ QGIS Server ♥ PostGIS ♥
• Opensource solution for publishing QGIS Project on the web,
  Lizmap Web Client
• Development, server hosting, consulting, QGIS support, training

OSM data model

• Different primitive objects

• A OSM way can either be a GIS line or GIS polygon according to its OSM tags (key/values)
• A OSM relation can be point, line, multilinestrings, multipolygons, mixed geometry ...

OSM data model

Another difference ➡ attributes

• In GIS, the layer has one or many fields, defining all features in this specific layer

• In OSM, the layer does not exist. Each feature is individual and has its own fields.

Do you need …

• to have up to date OSM data ?
• to work with small extent or a big extent ?
  • By the way, what small extent and big extent ? (for online API)
  • Density of data in different part of the worlds
• to have OSM metadata such as contributor, changeset, timestamp ?
• data designed for display or analysis or routing or geocoding or … ?
• all OSM keys and values ?

With QGIS only

• Add the default mapnik style as a raster, from the QGIS Browser

With QGIS only

• Some online tools are already transforming the data into GIS formats (SHP, Geopackage, ...)
• https://download.geofabrik.de/
• https://www.data.data-wax.com/ France and other countries, QGIS style, GitHub (➡ this screenshot)
• ...

With QGIS only

• Load OSM XML or PBF files
  • Thanks to OGR in background
• Different websites to download these files:
  • https://download.geofabrik.de/
  • http://download.openstreetmap.fr/extracts/
  • ...

With QGIS only

• It starts to be an issue if you want some specific fields
• This is called an HStore field

Use Processing Explode HStore

Or use QGIS Expression

for selection, labelling ...

Using QGIS Plugins

A few plugins in the QGIS plugin manager among the 973 plugins available

QuickMapServices plugin

OpenTopoMap in the background, based on OSM, designed for hiking 🏔

QuickMapServices plugin

In QuickMapServices, go in Settings ➡ More services ➡ Get contributed pack to enable a lot of basemaps .

QuickOSM plugin

• Download the data on the fly
• Making requests to the Overpass API, similar to Overpass-Turbo
  • Server API to retrieve raw OSM data based on queries (OQL)
• QuickOSM 2.0.0 has been released
• Targeting both
  • non OSM contributors
  • and OSM OverpassAPI experts
• It's removing the HStore field other_tags by exploding it
• As it's an API, limited amount of data
• Let's make an overview of this new version

Quick Query

• Search in your native language
  • Bakery
  • Bäckerei
  • Boulangerie
  • ➡ shop=bakery in OSM
• Multi key/value support with AND/OR operator

• Thanks to the JOSM and Vespucci community to share these presets on GitHub

Quick Query

French people love and

Map presets

• Download many layers, many OSM objects, with a QGIS symbology at the same time with 2 clicks

QuickOSM in Processing

• Available in Processing Toolbox and Modeler
• Example : downloading fire hydrants, reprojecting in meters projection, buffering and QGIS Style

QuickOSM in Processing

Local OSM file

• Having a PBF/OSM file on your computer ?
• You can still filter it

Geocoding

• New in QGIS 3.20
• No more plugin required
• https://nominatim.qgis.org
• Processing algorithm for batch geocoding
  

Geocoding

• New in QGIS 3.20
• No more plugin required
• https://nominatim.qgis.org
• Integrated in the locator bar (without plugin)

Routing

• ORS Tools
• API based on OpenStreetMap data
• isochrones and matrix calculations

Importing OSM in a database ?

https://wiki.openstreetmap.org/wiki/Databases_and_data_access_APIs#Database_Schemas

• Mainly osm2pgsql, used for rendering, very old project and used
• Imposm, version 3 is updatable. Each layer has a mapping configuration

Database with docker

• and
• https://github.com/kartoza/docker-osm
• Docker-compose project :
  • PostgreSQL container
  • Imposm container
  • OSMUpdate container : to download OSM diff files
• Workflow
  • Drop a PBF file in the folder
  • Drop the area of interest for clipping (recommended) in the folder
  • Copy .example.env to .env for local settings
  • make run

et voila !

Possible to customize the configuration :

• Different mapping
• Generalization for different scales
• Updated every two minutes by default
• SQL Triggers, views
• Styles included in the QGIS layer_styles table

Vector tiles

• Vector tile support, new in QGIS 3.14
• MapTiler / OpenMapTiles https://openmaptiles.org/
• Presentation from Adam Laza in a few minutes