OSM Map On Garmin/Cycle map

From OpenStreetMap

You can put a cycle-focused map on your Garmin GPS, made from OSM data. This page explains how to build it - if you just want to download a pre-built one for the UK, go to OSM Map On Garmin/Download.

Contents 1 Prerequisites 2 Running it 3 Troubleshooting 4 What it does 5 What it doesn't 6 Future plans 7 Finding out why it doesn't work

Prerequisites

• Install the Perl modules IO::Uncompress::Bunzip2 from CPAN
  • IO::Uncompress::Bunzip2 depends on Compress::Raw::Bzip2 and IO::Compress::Base; Debian/Ubuntu users can build packages with e.g. dh-make-perl --build --cpan Compress::Raw::Bzip2
• Download mkgmap and ungzip it
• Download osmcut.*.jar from here, and put the .jar in the mkgmap directory
• Download preprocess.pl from svn, and put it in the mkgmap directory
• Download cycling-map-features.csv from svn, and put it in mkgmap/resources
• Download an .osm file from somewhere (e.g. one of these planet.osm extracts)

Running it

• perl preprocess.pl yourosmfile.osm (or yourosmfile.osm.bz2)
• It will create a gmapsupp.img file, which you should copy across to your GPS in the usual way (put it in the Garmin subdirectory)

Troubleshooting

• If you are getting an error message like "GC Warning: Out of Memory! Returning NIL!", you can edit preprocess.pl and increase the option "-Xmx512M" to e.g. "-Xmx1024M" in the java call. This assumes you have enough RAM for that.
• If you are getting a "Exception in thread "main" java.lang.NoClassDefFoundError: java.util.Scanner", then you are probably using gcj instead of Sun's Java (check with java -version).

What it does

• Produces a map with the following features:
  • NCN/RCN/LCN cycle routes are highlighted
  • Other roads are toned down a little
  • Refs are munged so that cycle route numbers are obvious
  • Shows cycle parking and bike shops
  • Filesize of about 32MB for the UK at present, 44MB for Germany (April 2008)
• Stops you getting lost on the National Cycle Network

What it doesn't

• Doesn't do cycle node networks, yet
• There are a few little peculiarities (if you 'mouseover' an unnamed minor road, it will say "County boundary", because that's the style it's using)
• Display umlauts - it somehow reduces "üöä" to "uoa".

Future plans

• Use a custom .TYP file (see http://ati.land.cz/gps/typdecomp/editor.cgi) instead of doing quite so much munging

Finding out why it doesn't work

• Ask Richard