Notes on handling elevation with Geojson

There are a couple of approaches to encoding elevation in geojson.

1. The value for a feature’s coordinates key should an array of numbers, which are ordered easting, northing and (optionally) altitude. The array represents a position.
2. Alternatively, you can make the elevation value one of the feature’s properties.

Both approaches are demonstrated below.

{
  "type": "Feature",
  "properties": {
    "name": "Mount Ruapehu",
    "elevation_m": 2797
  },
  "geometry": {
    "type": "Point",
    "coordinates": [
      175.55890560150146,
      -39.28834275351452,
      2797
    ]
  }
}