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I have a few (~50) PBF files came from SRTM conversion using phyghtmap.

How to merge all of them before importing with osm2pgsql?

3 Answers 3

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You can use osmium for merging:

osmium merge file1.osm file2.osm -o merged.osm.

Alternatively try osmosis:

osmosis --rx file1.osm --rx file2.osm --merge --wx merged.osm

Note that osmosis has a weird syntax and you need to specify the --merge commands n-1 times for merging n files.

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  • Ok. But how to merge several files at once? I have a lot of them.
    – Magno C
    Commented Jun 6, 2017 at 11:18
  • 2
    Just specify as many files as you want: omium merge file*.osm -o merged.osm.
    – scai
    Commented Jun 6, 2017 at 11:21
  • 1
    BTW: Can I do the same with PBF files?
    – Magno C
    Commented Jun 6, 2017 at 13:22
  • 1
    Can't find merge option. : osmcode.org/osmium-tool/manual.html#command-line-completion
    – Magno C
    Commented Jun 6, 2017 at 13:25
  • 3
    For PBF files use osmosis --rb file1.osm --rb file2.osm --merge --wb merged.osm. rx is for XML files.
    – Milanka
    Commented Jul 26, 2019 at 12:24
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On Ubuntu:

sudo apt-get install osmium-tool
osmium cat new-york.osm.pbf new-jersey.osm.pbf connecticut.osm.pbf -o ny-nj-ct.osm.pbf
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  • Easy to follow these for osmium with the following version >> osmium --version ``` osmium version 1.16.0 libosmium version 2.20.0 Supported PBF compression types: none zlib lz4```
    – Sid
    Commented Oct 23, 2023 at 22:04
  • Note that osmium cat is often not what you want, take a look at osmium merge instead!
    – centic
    Commented Nov 30, 2023 at 23:10
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osmconvert did trick for me on windows for two files.

osmconvert a.pbf --out-o5m | osmconvert - b.pbf -o=all.pbf

https://wiki.openstreetmap.org/wiki/Osmconvert

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