How merge osm files with same ID objects?

Question

How merge many OSM files with same ID(between files) to one OSM file? I trying OSMCONVERT but he not add object with same ID in other OSM file.

Answer 1

osmconvert, according to the OSM wiki, supports only change files (.osc or .o5c) but can't merge regular .osm files.

You can use osmium for merging:

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

Or alternatively osmosis:

osmosis --rx 1.osm --rx 2.osm --rx 3.osm --merge --merge --wx merged.osm

Note that for n files you will need n-1 merge commands.

However you should keep in mind that merging files from different dates might not work as expected and can lead to conflicts. I don't know how good these tools can handle this, if at all.

• user15445: error: " Node -24 does not have a version attribute as OSM 0.6 are required to have. Is this a 0.5 file?" JOSM saving files without version attribute in new object.
• scai: That's true. JOSM can't assign a version to a new element. This is done by the main API when uploading the file to the database. I guess you have to add fake versions to your new elements.
• user15445: How add fake version by automatic?
• scai: I don't know of any existing tool capable of adding fake versions, although there should be other people that run into the same problem in the past. I guess you can add fake versions yourself with a little script in you favorite scripting language.
• user15445: Yes, but i can create little script for set random ID in osm files for OSMCONVERT. :)