peak2osm

Merge peak names and elevations from Kartverket to OSM in Norway

Usage

python peak2osm.py <municipality>

Workflow

This script merges peak names from Kartverket SSR and elevations from Kartverket N50 with existing peaks in OSM.

Typical workflow:

1. Run peaks2osm for a given municipality

   It will produce three source files for reference in addition to the merged file (for example named peaks_3430_Os.osm):

   • Current OSM peaks
   • N50 peaks
   • SSR peaks

2. Handle potential duplicates

   • Search for DUPLICATE to discover identical or similar names within a distance of 1000 meters.
   • Merge names or remove duplicate.

3. Handle close peaks with conflicting names

   • Search for CLOSE to discover close peaks (within 50 meters) which have different names.
   • Determine how alternative names for the same peak should be tagged, for example using alt_name=*, or if the peaks could be slightly relocated.

4. Check close peaks without conflicting names

   • Search for CHECK to discover other close peaks (within 300 meters).
   • Determine if the peaks should be merged or slightly relocated.

5. Check merged peaks

   • Search for example GAP>50 to check if the merged peak now have the correct location. The number represents the gap in meters.

6. Check tagging for certain peak types

   • SSR_TYPE=berg - Check if natural=cliff is a better tag.
   • SSR_TYPE=rygg - Check natural=hill vs natural=ridge.
   • SSR_TYPE=hei or SSR_TYPE=ås - Check for a better location or natural=ridge as these names often have a fuzzy location.

7. Check for dupliactes across the municipality boundary

   • Search for new and select OpenStreetMap as background imagery to discover any potential duplicates just across the municipality boundary.

8. Check natural=peak

   • With the Kartverket topo map as background imagery, check if more peaks should get natural=peak tagging.
   • You may want to use search using the N50=* tag to filter the most prominent peaks, as determined by Kartverket for N50.

9. Resolve tagging conflicts

   • OSM_ele=* - Contains the current elevation in OSM.
   • OSM_name= - Contains the current spelling of name= in OSM.
   • OSM_place=peak - Contains the current place=* tag in OSM.

10. Check place=locality

    • Remove for natural=peak
    • Remove if name=* is missing
    • Add for natural=hill, cliff, ridge

11. Upload to OSM

    • Remove remaining uppercase tags and upload to OSM.

References

• ssr2osm på GitHub
• n50osm på GitHub
• Kartverket SSR place name import wiki
• Kartverket topo import wiki