• Create a directory DEM: mkdir DEM
• Go to https://geo.javawa.nl/srtm/index.php, select the region you are using and download each file listed on the right (use the lowest resolution available)
• Extract and move the contents of all height maps to the DEM directory
• Edit mkgmap.args and replace map_with_dem_files with DEM

• • java -Xms4096m -Xmx4096m -jar <path/to/mkgmap.jar> --gmapsupp -c mkgmap.args -c splitter/template.args 20011.txt

• Copy the file 20011.txt from the Openfietsmap lite directory: cp "mkgmap-style-sheets/typ/Openfietsmap lite"/20011.txt .

• Copy the mkgmap style sheets to the current directory: cp -r "mkgmap-style-sheets/styles/Openfietsmap full"/* .
• Create a directory Styles
• Copy the Openfietmap Full style directory to Styles: cp -r "mkgmap-style-sheets/styles/Openfietsmap full"/* Styles/

• Download sea-latest.zip from https://www.thkukuk.de/osm/data/sea-latest.zip and rename to sea.zip
• Download bounds-latest.zip from https://www.thkukuk.de/osm/data/bounds-latest.zip and rename to bounds.zip

• • java -Xms4096m -Xmx4096m -jar <path/to/splitter.jar> --output=pbf --output-dir=splitter --max-nodes=1400000 --mapid=10010001 --geonames-file=cities15000.txt --polygon-file=beneluxswgermany.poly europe-latest.osm.pbf
• Create image file for installing on Garmin:
  • java -Xms4096m -Xmx4096m -jar <path/to/mkgmap.jar> -c mkgmap.args -c splitter/template.args 20011.txt

• Create a directory for the openfietsmap files: mkdir openfietsmap
• Go into this directory: cd openfietsmap
• Clone the mkgmap style sheets repository: git clone https://github.com/ligfietser/mkgmap-style-sheets.git
• Download the file cities15000.txt from: http://download.geonames.org/export/dump/cities15000.zip (unzip to get .txt)
• Download splitter from: https://www.mkgmap.org.uk/download/splitter.html (splitter-r653.zip)
• Download mkgmap from: https://www.mkgmap.org.uk/download/mkgmap.html (mkgmap-r4916.zip)
• Extract splitter and mkgmap using unzip

• Paste the KML data into a new file (it is not actually in KML format). Edit the ploygon file to list coordinates 1 per line, start each line with 2 spaces, replace comma (,) with 2 spaces

See also

• https://www.openfietsmap.nl/tips-tricks/procedure

Create custom OpenFietsMap

• Draw polygon around desired area. Select KML in the lower left corner and click the copy to clipboard icon
• Paste the KML data into a new file. Edit the ploygon file to list coordinates 1 per line, start each line with 2 spaces, replace comma (,) with 2 spaces

• Save the file as beneluxswgermany.poly (See beneluxswgermany.poly)

Create custom OpenFietsMap

• Create bounding box using: https://boundingbox.klokantech.com/
• Draw polygon around desired area and copy/paste in KML format
• Edit the KML file to list coordinates 1 per line, start each line with 2 spaces, replace comma (,) with 2 spaces
• Add header:
  • beneluxswgermany
  • 1
• Add footer:
  • END
  • END
• Download .osm.bpf file from http://download.geofabrik.de/europe.html
  • http://download.geofabrik.de/europe-latest.osm.pbf
• Split Europe files in pieces and limit to polygon:
  • java -Xms2048 -Xmx2048m -jar <path/to/splitter.jar> --output=pbf --output-dir=splitter --max-nodes=1400000 --mapid=10010001 --geonames-file=cities15000.txt --polygon-file=beneluxswgermany.poly europe-latest.osm.pbf

• beneluxswgermany.poly: beneluxswgermany.poly

-- Ivo van Geel - 20 Jul 2022