Files
ferro-ta/src/overlap/midpoint.rs
T
2026-03-23 23:34:28 +05:30

31 lines
1.1 KiB
Rust

use crate::validation;
use numpy::{IntoPyArray, PyArray1, PyReadonlyArray1};
use pyo3::exceptions::PyValueError;
use pyo3::prelude::*;
use ta::indicators::{Maximum, Minimum};
use ta::Next;
/// Midpoint: (max(close) + min(close)) / 2 over the rolling window.
#[pyfunction]
#[pyo3(signature = (close, timeperiod = 14))]
pub fn midpoint<'py>(
py: Python<'py>,
close: PyReadonlyArray1<'py, f64>,
timeperiod: usize,
) -> PyResult<Bound<'py, PyArray1<f64>>> {
validation::validate_timeperiod(timeperiod, "timeperiod", 1)?;
let prices = close.as_slice()?;
let n = prices.len();
let mut max_ind = Maximum::new(timeperiod).map_err(|e| PyValueError::new_err(e.to_string()))?;
let mut min_ind = Minimum::new(timeperiod).map_err(|e| PyValueError::new_err(e.to_string()))?;
let mut result = vec![f64::NAN; n];
for (i, &price) in prices.iter().enumerate() {
let mx = max_ind.next(price);
let mn = min_ind.next(price);
if i + 1 >= timeperiod {
result[i] = (mx + mn) / 2.0;
}
}
Ok(result.into_pyarray(py))
}