Crate allan Copy item path

Allan provides variance and deviation tools for stability analysis

§Goals

• provide streaming variance and deviations from series data
• pre-allocated datastructures
• support for gaps in data using NaN markers

§Usage

Create a new instance, add records, retrieve statistic

§Gap Handling

This implementation supports gaps in time-series data by using NaN as a gap marker. When a gap is encountered (marked by recording f64::NAN), calculations that would span the gap are automatically excluded from the variance computation, ensuring accurate results even with incomplete data.

§Example

Create a new instance, add a few records, retrieve allan deviation

use allan::*;

// Allan variance/deviation
let mut allan = Allan::new();
for _ in 0..100 {
    allan.record(1.0);
}
assert_eq!(allan.get(1).unwrap().deviation().unwrap(), 0.0);

// Hadamard variance/deviation (separate calculation)
let mut hadamard = Hadamard::new();
for _ in 0..100 {
    hadamard.record(1.0);
}
assert_eq!(hadamard.get(1).unwrap().deviation().unwrap(), 0.0);

// Modified Allan variance/deviation (separate calculation)
let mut modified = ModifiedAllan::new();
for _ in 0..100 {
    modified.record(1.0);
}
assert_eq!(modified.get(1).unwrap().deviation().unwrap(), 0.0);