[Qgis-user] QGIS to load spefific OpenStreetMap data

[Jorge Gustavo Rocha]

Hi,

Thank you for the feedback, Clifford. Adding the suffix 'in Zurich' is
better than using the bounding box. Good point! We can drop the 'shop'
key and simply write: 'bakery or supermarket in Zurich' in the Wizard.
Much better!

Regards,

Jorge Gustavo


Às 00:02 de 15/05/19, Clifford Snow escreveu:
> Stefan,
> Let me make one suggestion to Jorge's overpass query. By using the
> Overpass-Turbo Wizard search for shop=bakery or shop=supermarket in
> Zurich. By adding in Zurich, the query will leave out objects in
> adjacent cities.
> 
> From the overpass turbo webpage, export the data as a geojson to load
> into QGIS. Should work like a charm.
> 
> Best
> Clifford
> 
> On Tue, May 14, 2019 at 3:43 PM Jorge Gustavo Rocha <jgr at geomaster.pt
> <mailto:jgr at geomaster.pt>> wrote:
> 
>     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 outdated too [2].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 * QuickOSM generates queries in outdated Overpass XML, but accepts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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>     Jorge Gustavo Rocha
>     CTO
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Logo*   Geomaster, LDA*
  *VENHA DESCOBRIR O CAMINHO DO OPEN SOURCE CONNOSC**O

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N.º 423, 4715-214 Braga
VAT/NIF510 906 109
Phone  +351 253 680 323
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------------------------------------------------------------------------
	 
Jorge Gustavo Rocha
CTO

Mobile  +351 910 333 888
Email    jgr at geomaster.pt