[gdal-dev] Extracting keys & values from OSM Planet

[Frank Broniewski]

Hi Nikos,

I think it would be quite easy to hack up a python script that generates a osmconf.ini with the configparser module and calls ogr2ogr via subprocess to process the data, but I don’t have done anything in that regard yet.
I don’t remember exactly anymore why I chose osmconvert over ogr2ogr for extracting a subregion from a larger PBF.  But as far as I remember osmconvert was superior in speed and accuracy for that task than ogr2ogr.

Dipl. Geogr. Frank Broniewski
Waldhölzbacher Str. 51
66679 Losheim am See
06872 5090684
www.frankbroniewski.com

Von: Nikos Alexandris
Gesendet: Mittwoch, 8. November 2017 11:38
An: Frank Broniewski
Cc: gdal-dev at lists.osgeo.org
Betreff: Re: AW: [gdal-dev] Extracting keys & values from OSM Planet

Frank Broniewski:

>Hi Nikos,
>
>I am using a similar approach to yours to extract data from OSM files
>to a GIS format. I chose Spatiallite as a format since it is superior
>to the Shapefile format in all areas.  FYI here’s what I do:

>osmconvert -b="5.5,49,8,50.5" -o=saarland.osm.pbf "europe-latest.osm.pbf"

>ogr2ogr --config OSM_CONFIG_FILE /home/frank/gdal/osmconf.ini -f SQLite -dsco SPATIALITE=YES -progress -gt 65536 -t_srs "EPSG:31466" >/tmp/saarland.sqlite /tmp/saarland.osm.pbf

>Please note the “–config” switch for a custom osmconf.ini. With that
>you can copy the config to a custom location and have several configs
>for many use cases.

Thank you Even and Frank!

I will likely adopt the `osmconf.ini` method.

@Frank, I would go a step further if time permits. A function or script that
takes something like `layer=lines` and
`keys="track,footway,bridleway,path"` as input parameters and outputs the
custom configuration file.

>From reading the driver's manual [0], there is a hint about the spatial,
filtering resulting in lines or polygons missing vertices. Is this a/the
reason, to stick to `osmconvert` for extracting areas of interest?

Thank you for your (invaluable) time, Nikos

[0] http://www.gdal.org/drv_osm.html

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