Know where everything is, and where it’s been.

import spatio

db = spatio.Spatio.open("fleet.db")

# Longitude, latitude. Metadata is any JSON-able dict.
nyc = spatio.Point(-74.0060, 40.7128)
db.upsert("cities", "nyc", nyc, {"population": 8_000_000})

# Everything within 100 km, nearest first
nearby = db.query_radius("cities", nyc, 100_000, limit=10)
for object_id, point, meta, dist in nearby:
    print(object_id, round(dist))

use serde_json::json;
use spatio::{prelude::*, Point3d};

fn main() -> Result<()> {
    let db = Spatio::open("fleet.db")?;

    // Track a drone with altitude
    let pos = Point3d::new(-74.006, 40.712, 100.0);
    db.upsert("drones", "drone_1", pos, json!({}), None)?;

    // Other drones within 500 m of drone_1
    let near = db.query_near("drones", "drone_1", 500.0, 5)?;
    println!("{} nearby", near.len());
    Ok(())
}

db, err := spatio.OpenMemory()
if err != nil {
    panic(err)
}
defer db.Close()

nyc := geom.NewPointFlat(geom.XY, []float64{-74.0060, 40.7128})
_ = db.Upsert("cities", "nyc", nyc, map[string]any{"population": 8_000_000})

nearby, _ := db.QueryRadius("cities", nyc, 100_000, 10)
for _, n := range nearby {
    fmt.Printf("%s at %.0fm\n", n.ObjectID, n.Distance)
}

import { Point, Spatio } from "spatio-db"

const db = Spatio.open("fleet.db")

// Longitude, latitude. Metadata is any JSON value.
const nyc = new Point(-74.006, 40.7128)
db.upsert("cities", "nyc", nyc, { population: 8_000_000 })

// Everything within 100 km, nearest first
const nearby = db.queryRadius("cities", nyc, 100_000, 10)
for (const { objectId, distance } of nearby) {
  console.log(objectId, Math.round(distance))
}