osmium-renumber(1) renumber object IDs


osmium renumber [OPTIONS] OSM-DATA-FILE


The objects (nodes, ways, and relations) in an OSM file often have very large IDs. This can make some kinds of postprocessing difficult. This command will renumber all objects using IDs starting at 1. Referential integrity will be kept. All objects which appear in the source file will be in the same order in the output file. IDs of objects which are not in the file but referenced from ways or relations are not guaranteed to be in the correct order.

This command expects the input file to be ordered in the usual way: First nodes in order of ID, then ways in order of ID, then relations in order of ID. The input file will be read twice, so it will not work with STDIN.

You must never upload the data generated by this command to OSM! This would really confuse the OSM database because it knows the objects under different IDs.


-i, --index-directory=DIR
Directory where the index files for mapping between old and news IDs are read from and written to, respectively. Use this if you want to map IDs in several OSM files. Without this option, the indexes are not read from or written to disk. The directory must exist. Use '.' for the current directory. The files written will be named nodes.idx, ways.idx, and relations.idx.


-h, --help
Show usage help.
-v, --verbose
Set verbose mode. The program will output information about what it is doing to stderr.


-F, --input-format=FORMAT
The format of the input file(s). Can be used to set the input format if it can't be autodetected from the file name(s). This will set the format for all input files, there is no way to set the format for some input files only. See osmium-file-formats(5) or the libosmium manual for details.


-f, --output-format=FORMAT
The format of the output file. Can be used to set the output file format if it can't be autodetected from the output file name. See osmium-file-formats(5) or the libosmium manual for details.
Call fsync after writing the output file to force flushing buffers to disk.
The name and version of the program generating the output file. It will be added to the header of the output file. Default is "osmium/" and the version of osmium.
-o, --output=FILE
Name of the output file. Default is '-' (stdout).
-O, --overwrite
Allow an existing output file to be overwritten. Normally osmium will refuse to write over an existing file.
Add output header option. This option can be given several times. See the libosmium manual for a list of allowed header options.


osmium renumber exits with exit code

if everything went alright,
if there was an error processing the data, or
if there was a problem with the command line arguments.


osmium renumber needs quite a bit of main memory to keep the mapping between old and new IDs. It is intended for small to medium sized extracts. You will need more than 32 GB RAM to run this on a full planet.

Memory use is at least 8 bytes per node, way, and relation ID in the input file.


Renumber a PBF file and output to a compressed XML file:

osmium renumber -o ch.osm.bz2 germany.osm.pbf

Renumbering Germany currently (spring 2016) takes less than three minutes and needs about 3 GB RAM.

Renumber an OSM file storing the indexes on disk:

osmium renumber -i. -o renumbered.osm data.osm

then rewrite a change file, too:

osmium renumber -i. -o renumbered.osc changes.osc


Copyright (C) 2013-2015 Jochen Topf <[email protected]>.

License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>. This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law.


If you have any questions or want to report a bug, please go to http://osmcode.org/contact.html


Jochen Topf <[email protected]>.