garmin-img-format-parsing/stage-2-parse-stage-1

Done.

Updated script: landmarks_csv_to_osmand_v2.py

What changed:

• default dedupe is now coordinate-based only

• dedupe is modular:

  • coord
  • coord_name
  • coord_type
  • coord_name_type
  • off

• dedupe uses a meter radius instead of naive decimal rounding

• duplicates are merged, not just dropped

• merged records keep:

  • best name
  • richer semantic tags
  • union of GPXSee classes
  • source file list
  • duplicate count

• grouping is improved:

  • --group-by auto
  • --group-by category
  • --group-by type
  • --group-by source

• automatic grouping now distinguishes things like:

  • amenity_drinking_water
  • natural_spring
  • place_village
  • fallback Garmin or GPXSee groups

• interactive group naming added:

  • --interactive-group-names
  • shows sample examples from each detected group
  • lets you keep or rename the proposed group name

• loader is now tolerant of both:

  • the raw landmark CSVs
  • the slimmer per-category CSVs you are iterating through

• .gpx.gz, .osm.gz, .json.gz, .csv.gz now actually get gzip-written correctly

Useful commands:

Show detected groups with examples:

python landmarks_csv_to_osmand_v2.py *.csv --show-groups

Interactive rename flow:

python landmarks_csv_to_osmand_v2.py *.csv --show-groups --interactive-group-names --group-by auto --gpx landmarks.gpx

Tighter coordinate dedupe:

python landmarks_csv_to_osmand_v2.py *.csv --dedupe-mode coord --dedupe-radius-m 6 --gpx landmarks.gpx

Coordinate dedupe, but only merge when type also matches:

python landmarks_csv_to_osmand_v2.py *.csv --dedupe-mode coord_type --dedupe-radius-m 10 --gpx landmarks.gpx

Water-only overlay:

python landmarks_csv_to_osmand_v2.py *.csv --filter-tag amenity=drinking_water --gpx drinking_water.gpx

Springs-only overlay:

python landmarks_csv_to_osmand_v2.py *.csv --filter-tag natural=spring --gpx springs.gpx

If you want the next revision, I’d push it further in two directions:

• add dedupe reports showing which rows got merged into which canonical landmark
• add interactive split/merge controls for ambiguous groups, not just rename controls