[Qgis-user] QGIS to load spefific OpenStreetMap data

[Jorge Gustavo Rocha]

Hi Stefan,

Às 22:28 de 14/05/19, Stefan Keller escreveu:
> Hi,
> 
> I'm preparing a talk about QGIS and OpenStreetMap for the annual
> meeting of the local QGIS chapter.
> 
> => Question: How do you (users) load specific OSM data into QGIS, like
> for example all bakeries of Zurich? (ways/polygons as centroids?)
> 

I prefer to go to the overpass end point, to show how easy is to extract
OpenStreetMap data. It is faster than installing a plugin.

For a talk, use the overpass Wizard to build the query.

1) Go to http://overpass-turbo.eu/
2) Search for Zurich
3) Open the Wizard
4) Just type: bakery
5) Build and run query
6) Export as GeoJson
7) Add layer to QGIS (eventually points and polygons; calculate the
centroids for the polygons in QGIS)

Good luck for your presentation.

Regards,

Jorge Gustavo

> Background: QGIS 2 had a built in downloader which is gone in QGIS 3.
> This instruction is 4y old [1], and this wiki page seems to be
> outdated too [2].
> 
> I know, that QGIS can read OpenStreetMap XML (.osm) and .PBF files as
> vector layer. And I know about these two plugins: OSMDownloader [3]
> and QuickOSM [4].
> 
> * OSMDownloader requests a bbox from the user, then downloads the
> whole area through the OSM API using the OGR OSM driver.
> * QuickOSM generates queries in outdated Overpass XML, but accepts
> also the newer Overpass QL language, like for example the following:
> 
> [out:xml];
> area[name="Uster"];
> (
>   nwr[shop~"supermarket|bakery"](area);
> );
> out body;
>> ;
> out skel qt;
> 
> :Stefan
> 
> [1] https://learnosm.org/en/osm-data/osm-in-qgis/
> [2] https://wiki.openstreetmap.org/wiki/QGIS
> [3] https://plugins.qgis.org/plugins/OSMDownloader/
> [4] https://plugins.qgis.org/plugins/QuickOSM/
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