Rust Geocoding Tutorial

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This is a tutorial for using the OpenCage Geocoding API in Rust.

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Rust library for forward and reverse geocoding

Tested with Rust 1.3. The library doesn't have command-line binaries so `cargo install geocoding` won't work.

Create a new project (`cargo init`) and/or this to your existing `Cargo.toml` file:

geocoding = "0.0.3"

Coordinates to address

use geocoding::{Opencage, Reverse, Point};

fn main() {
  let p = Point::new(2.12870, 41.40139);
  let oc = Opencage::new("YOUR-API-KEY".to_string());
  let res = oc.reverse(&p);

  println!("{:?}", res.unwrap());
  // "Carrer de Calatrava, 68, 08017 Barcelona, Spain"

  println!("{:?}", oc.remaining_calls());
  // Some(2494)

Address to coordinates

use geocoding::{Opencage, Forward, Point};

fn main() {
  let oc = Opencage::new("YOUR-API-KEY".to_string());
  let address = "Schwabing, München";
  let res: Vec<Point<f64>> = oc.forward(&address).unwrap();
  let first_result = &res[0];

  println!("{longitude}, {latitude}", longitude = first_result.x(), latitude = first_result.y());
  // 11.5761796, 48.1599218

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