Update docs to be more useful
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README.md
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README.md
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Overview
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This project contains useful info/tools for processing OSM maps into the mapwriter file format (.map)
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This project contains useful info/tools for processing OSM maps into the mapwriter file format (.map). It was developed to help generating offline map files for Locus on Android.
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Manual Procedure
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Dependencies / Prereqs
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To run this program you'll need the following
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Prep
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==
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- Download updated maps: http://download.geofabrik.de/north-america.html and http://download.geofabrik.de/north-america/canada.html
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- Pull latest osmosis from http://wiki.openstreetmap.org/wiki/Osmosis
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- Pull latest mapsforge for osmosis from https://github.com/mapsforge/mapsforge/blob/master/docs/Downloads.md
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Process maps for device
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- Setup osmosis in a directory (unzip release -- ZIPBOMB ALERT!!!!)
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- Create plugins directory under osmosis
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- Move mapsforge release jar to osmosis/lib/default/
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- Decompress maps (if they were previously compressed)
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- ./osmosis bin/osmosis --rb file=../maps/a_map.osm.pbf --mapfile-writer file=../maps/a_map.map
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-* If you run out of heap space add JAVACMD_OPTIONS="-Xmx16g" to the start of the line
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-* If increasing the heap doesn't work, append type=hd to end of command
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-* You can merge maps using --merge passed to osmosis (before --mapfile-writer) using n-1 instances of --merge where n is the number of --rb or --rx options passed
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General Notes
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Used to generate above info
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* https://github.com/mapsforge/mapsforge/blob/master/docs/Getting-Started-Map-Writer.md
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* A Linux environment
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* Python 3.x installed
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* Java 1.8 or higher installed (OpenJDK works)
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* wget installed
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* bunzip2 installed (usually part of bzip2 package)
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Installation
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Head over to releases tab and download the latest. Extract the file and you're good to go. Everything is self-contained minuse the above dependencies.
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Running
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To run the program, cd to the directory where you extracted the release and run './process_maps.py' with at least one '--map-list /path/to/list.txt parameter'. See the lists directory for examples on how to format the map list files.
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Program Usage
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usage: process_maps.py [-h] [--map-list MAP_LIST] [--no-sleep] [--use-ram]
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optional arguments:
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-h, --help show this help message and exit
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--map-list MAP_LIST a text file with one map URL per line, can be specified
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more than once
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--no-sleep don't sleep between downloads -- WARNING you can easily
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run into throttling on mirrors if you use this option
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--use-ram use RAM for mapsforge processing -- WARNING mapsforge
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uses 10x the map size in RAM for processing (ie. 100Mb
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map = 1Gb RAM usage), you want a LOT of RAM for this
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option
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Licencing
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25
manual_processing.md
Normal file
25
manual_processing.md
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Manual Procedure
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Prep
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==
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- Download updated maps: http://download.geofabrik.de/north-america.html and http://download.geofabrik.de/north-america/canada.html
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- Pull latest osmosis from http://wiki.openstreetmap.org/wiki/Osmosis
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- Pull latest mapsforge for osmosis from https://github.com/mapsforge/mapsforge/blob/master/docs/Downloads.md
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Process maps for device
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==
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- Setup osmosis in a directory (unzip release -- ZIPBOMB ALERT!!!!)
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- Create plugins directory under osmosis
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- Move mapsforge release jar to osmosis/lib/default/
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- Decompress maps (if they were previously compressed)
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- ./osmosis bin/osmosis --rb file=../maps/a_map.osm.pbf --mapfile-writer file=../maps/a_map.map
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* If you run out of heap space add JAVACMD_OPTIONS="-Xmx16g" to the start of the line
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* If increasing the heap doesn't work, append type=hd to end of command
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* You can merge maps using --merge passed to osmosis (before --mapfile-writer) using n-1 instances of --merge where n is the number of --rb or --rx options passed
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General Notes
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Used to generate above info
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* https://github.com/mapsforge/mapsforge/blob/master/docs/Getting-Started-Map-Writer.md
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