Struct SinglePrints 

pub struct SinglePrints { /* private fields */ }

Single Prints — the number of price levels (bins) in the rolling profile that were touched by exactly one bar, marking zones of low acceptance / fast movement.

for each of `bins` price levels over the last `period` candles:
  touches = number of bars whose high-low range covers that level
SinglePrints = count of levels with touches == 1

In Market Profile a “single print” is a price the market traded through so quickly that only one time-period printed there — a footprint of an aggressive, one-sided move with little two-way trade. Single prints often act as support or resistance on a retest (the imbalance gets “repaired”) and mark the edges of rapid moves. Counting them per profile gives a streaming gauge of how much of the recent range was traversed without acceptance: a high count means a fast, trending, low-rotation market; a low count means a balanced, well-traded range.

The output is a non-negative count. The first value lands after period candles; each update rebuilds the touch histogram in O(period · bins).

Example

use wickra_core::{Candle, Indicator, SinglePrints};

let mut indicator = SinglePrints::new(20, 24).unwrap();
let mut last = None;
for i in 0..40 {
    let base = 100.0 + f64::from(i); // a one-directional ramp -> many single prints
    let c = Candle::new(base, base + 0.5, base - 0.5, base, 1_000.0, 0).unwrap();
    last = indicator.update(c);
}
assert!(last.is_some());

Implementations

impl SinglePrints

pub fn new(period: usize, bins: usize) -> Result<Self>

Construct a Single Prints counter.

Errors

Returns Error::PeriodZero if period or bins is zero.

pub const fn params(&self) -> (usize, usize)

Configured (period, bins).

pub const fn value(&self) -> Option<f64>

Current value if available.

Trait Implementations

impl Clone for SinglePrints

fn clone(&self) -> SinglePrints

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for SinglePrints

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Indicator for SinglePrints

type Input = Candle

Type of one input data point (typically f64 for a price, or Candle / Tick).

type Output = f64

Type of one output value.

fn update(&mut self, candle: Candle) -> Option<f64>

Feed one new data point into the indicator and return the freshly computed output, or None if the indicator is still warming up.

fn reset(&mut self)

Reset all internal state, leaving the indicator equivalent to a freshly constructed instance with the same parameters.

fn warmup_period(&self) -> usize

Number of inputs required before the first non-None output can be produced.

fn is_ready(&self) -> bool

Whether the indicator has emitted at least one value since the last reset.

fn name(&self) -> &'static str

Stable, human-readable indicator name. Used by chaining and diagnostics.