Method neighbours

src/dbscan.rs:43–51

(&self, pos: usize)

    }

    fn neighbours(&self, pos: usize) -> Vec<usize> {
        let p = self.data.get(pos).unwrap();
        self.data.iter()
            .enumerate()
            .map(|(idx, q)| (idx, p.euclid(q)))
            .filter(|&(_idx, d)| d <= self.eps)
            .map(|(idx, _d)| idx)
            .collect()
    }

    fn noise(&mut self, pos: usize) {
        self.set_cluster(pos, -1);