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use crate::{Echo, View};
use std::collections::VecDeque;
#[derive(Clone)]
pub struct NET<V> {
view: V,
window_len: usize,
out: f64,
q_vals: VecDeque<f64>,
}
impl<V> std::fmt::Debug for NET<V>
where
V: View,
{
fn fmt(&self, fmt: &mut std::fmt::Formatter<'_>) -> Result<(), std::fmt::Error> {
write!(
fmt,
"NET(window_len: {}, out: {}, q_vals: {:?})",
self.window_len, self.out, self.q_vals
)
}
}
#[inline(always)]
pub fn new_final(window_len: usize) -> NET<Echo> {
NET::new(Echo::new(), window_len)
}
impl<V> NET<V>
where
V: View,
{
#[inline]
pub fn new(view: V, window_len: usize) -> Self {
NET {
view,
window_len,
out: 0.0,
q_vals: VecDeque::new(),
}
}
}
impl<V> View for NET<V>
where
V: View,
{
fn update(&mut self, val: f64) {
self.view.update(val);
let val: f64 = self.view.last();
if self.q_vals.len() >= self.window_len {
self.q_vals.pop_front();
}
self.q_vals.push_back(val);
if self.q_vals.len() < 2 {
return;
}
let mut x: Vec<f64> = vec![0.0; self.q_vals.len()];
let mut y: Vec<f64> = vec![0.0; self.q_vals.len()];
for count in 1..self.q_vals.len() {
x[count] = *self.q_vals.get(self.q_vals.len() - count).unwrap();
y[count] = -(count as f64);
}
let mut num: f64 = 0.0;
for count in 2..self.q_vals.len() {
for k in 1..count - 1 {
num -= (x[count] - x[k]).signum();
}
}
let denom: f64 = 0.5 * self.q_vals.len() as f64 * (self.q_vals.len() as f64 - 1.0);
self.out = num / denom;
}
#[inline(always)]
fn last(&self) -> f64 {
self.out
}
}
#[cfg(test)]
mod tests {
use super::*;
use crate::plot::plot_values;
use crate::test_data::TEST_DATA;
#[test]
fn net_my_rsi_plot() {
let mut net = NET::new(crate::my_rsi::new_final(16), 16);
let mut out: Vec<f64> = vec![];
for v in &TEST_DATA {
net.update(*v);
out.push(net.last());
}
println!("out: {:?}", out);
let filename = "img/net_my_rsi.png";
plot_values(out, filename).unwrap();
}
}