Function bin 

pub fn bin(data: &[f64], count: usize) -> Vec<Bin<f64>>

Convenience function to create bins from f64 data with default settings.

Example

use d3rs::array::bin;

let data = vec![1.0, 2.0, 2.5, 3.0, 3.5, 4.0, 4.5, 5.0, 6.0, 7.0, 8.0, 9.0];
let bins = bin(&data, 4);

assert_eq!(bins.len(), 4);
assert!(bins[0].x0 < bins[0].x1);