Function smartnoise_runtime::components::digitize::bin_index[−][src]

pub fn bin_index<T: PartialOrd + Clone>(
    datum: &T, 
    edges: &[T], 
    inclusive_left: bool
) -> Option<usize>

Given datum and bin definition, finds index of appropriate bin.

Bins will be of the form [lower, upper) or (lower, upper] and are constructed from edges and inclusive_left.

Arguments

data - Data to be binned.
edges - Values representing the edges of bins.
inclusive_left - Whether or not the left edge of the bin is inclusive, i.e. the bins are of the form [lower, upper).

Return

Index of appropriate bin.

Example

use smartnoise_runtime::components::digitize::bin_index;

let data = vec![1.1, 2., 2.9, 4.1, 6.4];
let edges = vec![0., 1., 2., 3., 4., 5.];

let index1 = bin_index(&data[1], &edges, true);
assert_eq!(index1, Some(2));
let index2 = bin_index(&data[1], &edges, false);
assert_eq!(index2, Some(1));
let index3 = bin_index(&data[4], &edges, true);
assert!(index3.is_none());