[Qgis-user] Offline background map for large regions

Mon Jul 11 07:31:33 PDT 2022

For your use case I would definitely recommend a vector tile solution as 
you would have to store a LOT of tiles for a high-zoom raster tile store.

Upgrade your QGIS to something from this decade, maybe via Anaconda if 
using the official repos does not work. This is crucial for vector 
tiles! Then use the Vector Tiles Reader plugin to load a vector tile 
mbtile file (and style) or try drag and drop again, which should work in 
milliseconds for an unstyled display. Openmaptiles files should work 
fine if you don't want to build your own (try planetiler if you do).

Tangential: When you say "importing" shapefiles from geofabrik.de, what 
do you mean? Loading them in QGIS for a small area definitely should not 
take minutes but seconds unless your system is struggling by itself 
already :o)

If Germany is your main focus, you could also download the mapproxy 
caches from 
https://gdz.bkg.bund.de/index.php/default/wmts-topplusopen-wmts-topplus-open.html 
(warning, they are named .mbtile but are NOT ready-to-go files in the 
MBTiles standard) and run a local mapproxy. The Webmercator/EPSG:3857 
mbtile files can be used in QGIS if you rename them to .mbtiles.

Cheers, Hannes

Am 10.07.22 um 10:58 schrieb Andreas via Qgis-user:
>
> Hello!
>
> First I have to say that I'm a qgis beginner and I'm not very much into
> the concepts about functions and design behind QGIS, and GIS in general.
> So please apologize for any strange question...
>
>
> Currently I have an older core i7 with 8 GB RAM running QGIS Desktop
> 3.10 on Linux Mint 20.3, which I know is already obsolete but it's in
> the repositories of this most recent Linux Mint LTS version, and I need
> a stable system that does not break due to a library update etc.
>
>
> I want to visualize data points, that I collect "on the road" over large
> distances, on the fly. So far so good everything works very fine,
> opening the data log file in a text layer with surveillance of log
> changes. Except having an offline background map for orientation. There
> is not always internet connection, and also it would be quite expensive
> to continuously download the tiles from a server over LTE.
>
>
>
> Up to now I tried using shapefiles from geofabrik.de, but even importing
> a small town takes minutes.
>
> Also the plugins for downloading xyz tiles will not work, as I need
> whole europe offline available in the best case, at least a whole 
> country.
>
> Then I imported a .osm file in a spatialite database but there are
> thousands of attributes I have to chose from, not knowing which ones,
> and also I cannot import more than a small region due to the insane time
> it takes.
>
> The last thing I tried was a download of Germany vector tiles from
> maptiler.com, about 3,5 GB. When I drag and drop it into QGIS, it loads
> for hours without coming to an end, there is no information about what
> the software is doing (progress bar) or a button to stop the import, so
> I finally killed the QGIS process.
>
> I was also looking for GeoPackage maps, as they seemed to have an index
> and mbtiles not (which may be what causes the described problems), but
> did not find any resources on the net except from a site that provides
> the whole planet earth (which is way too much for me).
>
> Yesterday I tried to setup a QGIS Server to set up a WMTS service on the
> same machine, but I failed on finding out how to make map data available
> on the server (I have to provide a QGIS project file but as I already
> wrote, I was not even able to import a simple all-germany map).
>
>
> So, finally, there must be something I'm missing or I don't understand.
> If you have a smartphone or a Garmin GPS, you can easily download a map
> for whole germany that is about 2 GB, that can be imported in a few
> seconds, then accessed very performant by slow processors with tiny
> available memory. I also don't see why it should be necessary to go via
> a WMTS Server (http) to provide map data in a way QGIS can them handle
> with performance - how is the server getting its high performance, and
> why QGIS can't do it on it's own? Or can it - how??
>
>
> Any hints about how I can get large area offline maps into QGIS are
> highly appreciated - thank you very much in advance!
>
> Andreas
>
>
>
>
>
>
>
> _______________________________________________
> Qgis-user mailing list
> Qgis-user at lists.osgeo.org
> List info: https://lists.osgeo.org/mailman/listinfo/qgis-user
> Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user

-- 
Johannes Kröger / GIS-Entwickler/-Berater

---------------------------------------------
Schon gewusst?
In unserem Blog geben wir Tipps & Tricks zu Open-Source-GIS-Software
und berichten aus unserem Experten-Alltag:
https://wheregroup.com/blog/
---------------------------------------------

WhereGroup GmbH
Grevenweg 89
20537 Hamburg
Germany

Tel: +49 (0)228 / 90 90 38 - 36
Fax: +49 (0)228 / 90 90 38 - 11

johannes.kroeger at wheregroup.com
www.wheregroup.com
Geschäftsführer:
Olaf Knopp, Peter Stamm
Amtsgericht Bonn, HRB 9885
-------------------------------

-------------- next part --------------
A non-text attachment was scrubbed...
Name: OpenPGP_0x840A4B843789797F.asc
Type: application/pgp-keys
Size: 2472 bytes
Desc: OpenPGP public key
URL: <http://lists.osgeo.org/pipermail/qgis-user/attachments/20220711/273a80a2/attachment.key>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: OpenPGP_signature
Type: application/pgp-signature
Size: 665 bytes
Desc: OpenPGP digital signature
URL: <http://lists.osgeo.org/pipermail/qgis-user/attachments/20220711/273a80a2/attachment.sig>