NAME¶
osmium-diff - display differences between OSM files
SYNOPSIS¶
osmium diff [
OPTIONS]
OSM-FILE1 OSM-FILE2
DESCRIPTION¶
Finds differences between two OSM files and displays them.
Only differences between objects (node, ways, and relations) are found and
displayed. Headers are ignored.
Objects in both input files must be sorted in the same order.
Several output formats are supported, see the
OUTPUT FORMATS section.
This command is intended for displaying the differences between files to humans.
It can not be used to create an OSM change file (.osc), use
osmium-derive-changes for that.
The following output formats are supported and can be set with the
--output-format or
-f options. Default is the compact format.
- compact
- A very compact format. For all objects a line is printed with the type of
object ('n', 'w', or 'r'), the object ID and then the version number. If
objects appear in both files and are identical they are preceded by a
space (' ') character, if they are in both files, but different, they are
preceded by an asterisk ('*'). Otherwise they get a minus ('-') or plus
('+') character to show that they are only in the first or second file,
respectively.
- opl
- The usual OPL format with all lines preceded by space (' '), minus ('-'),
or plus ('+') characters depending on whether the object is in both, the
first, or the second file.
- debug
- The usual debug format with all lines preceded by space (' '), minus
('-'), or plus ('+') characters depending on whether the object is in
both, the first, or the second file. Color support can be enabled
('debug,color').
None of the output formats print the headers of the input files.
OPTIONS¶
- -c, --suppress-common
- Do not output objects that are the same in both files.
- -f, --output-format=FORMAT
- See the OUTPUT FORMATS section.
- -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.
- -q, --quiet
- No output. Just report when files differ through the return code.
- -s, --summary
- Print count of objects that are only in the left or right files, or the
same in both or different in both to stderr.
- -t, --object-type=TYPE
- Read only objects of given type (node, way,
relation). By default all types are read. This option can be given
multiple times. This affects the output as well as the return code of the
command.
COMMON OPTIONS¶
- -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.
DIAGNOSTICS¶
osmium diff exits with exit code
- 0
- if the files are the same,
- 1
- if the files are different, or
- 2
- if there was an error
MEMORY USAGE¶
osmium diff doesn't keep a lot of data in memory.
EXAMPLES¶
Show difference between Nepal files from January 2016 and Febrary 2016 in
compact format:
-
osmium diff nepal-20160101.osm.pbf nepal-20160201.osm.pbf
Show in color debug format only those objects that are different:
-
osmium diff nepal-20160101.osm.pbf nepal-20160201.osm.pbf -f debug,color -c
SEE ALSO¶
- •
- osmium(1), osmium-file-formats(5),
osmium-derive-changes(1)
- •
- Osmium website (http://osmcode.org/osmium-tool/)
COPYRIGHT¶
Copyright (C) 2013-2017 Jochen Topf <jochen@topf.org>.
License GPLv3+: GNU GPL version 3 or later
<
https://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
AUTHORS¶
Jochen Topf <jochen@topf.org>.