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

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use crate::validation;
use numpy::{IntoPyArray, PyArray1, PyReadonlyArray1};
use pyo3::exceptions::PyValueError;
use pyo3::prelude::*;
use super::{dema, ema, kama, sma, t3, tema, trima, wma};
/// Generic Moving Average. matype: 0=SMA, 1=EMA, 2=WMA, 3=DEMA, 4=TEMA, 5=TRIMA, 6=KAMA, 7=T3.
#[pyfunction]
#[pyo3(signature = (close, timeperiod = 30, matype = 0))]
pub fn ma<'py>(
py: Python<'py>,
close: PyReadonlyArray1<'py, f64>,
timeperiod: usize,
matype: u8,
) -> PyResult<Bound<'py, PyArray1<f64>>> {
validation::validate_timeperiod(timeperiod, "timeperiod", 1)?;
match matype {
0 => sma::sma_inner(py, close, timeperiod),
1 => ema::ema(py, close, timeperiod),
2 => wma::wma(py, close, timeperiod),
3 => dema::dema(py, close, timeperiod),
4 => tema::tema(py, close, timeperiod),
5 => trima::trima(py, close, timeperiod),
6 => kama::kama(py, close, timeperiod),
7 => t3::t3(py, close, timeperiod, 0.7),
_ => Err(PyValueError::new_err(
"matype must be 07 (SMA/EMA/WMA/DEMA/TEMA/TRIMA/KAMA/T3)",
)),
}
}
/// Moving Average with variable period per bar (SMA over period from periods array).
#[pyfunction]
#[pyo3(signature = (close, periods, minperiod = 2, maxperiod = 30))]
pub fn mavp<'py>(
py: Python<'py>,
close: PyReadonlyArray1<'py, f64>,
periods: PyReadonlyArray1<'py, f64>,
minperiod: usize,
maxperiod: usize,
) -> PyResult<Bound<'py, PyArray1<f64>>> {
let prices = close.as_slice()?;
let per = periods.as_slice()?;
let n = prices.len();
validation::validate_equal_length(&[(n, "close"), (per.len(), "periods")])?;
validation::validate_timeperiod(minperiod, "minperiod", 1)?;
validation::validate_timeperiod(maxperiod, "maxperiod", minperiod)?;
let mut result = vec![f64::NAN; n];
for i in 0..n {
let p = (per[i].round() as usize).clamp(minperiod, maxperiod);
if i + 1 >= p {
let sum: f64 = prices[(i + 1 - p)..=i].iter().sum();
result[i] = sum / p as f64;
}
}
Ok(result.into_pyarray(py))
}