[−][src]Struct ta::indicators::PercentagePriceOscillator
Percentage Price Oscillator (PPO).
The PPO indicator (or "oscillator") is a collection of three time series calculated from historical price data, most often the closing price. These three series are:
- The PPO series proper
- The "signal" or "average" series
- The "divergence" series which is the difference between the two
The PPO series is the difference between a "fast" (short period) exponential moving average (EMA), and a "slow" (longer period) EMA of the price series. The average series is an EMA of the PPO series itself.
Formula
Parameters
- fast_period - period for the fast EMA. Default is 12.
- slow_period - period for the slow EMA. Default is 26.
- signal_period - period for the signal EMA. Default is 9.
Example
use ta::indicators::PercentagePriceOscillator as Ppo; use ta::Next; let mut ppo = Ppo::new(3, 6, 4).unwrap(); assert_eq!(round(ppo.next(2.0).into()), (0.0, 0.0, 0.0)); assert_eq!(round(ppo.next(3.0).into()), (9.38, 3.75, 5.63)); assert_eq!(round(ppo.next(4.2).into()), (18.26, 9.56, 8.71)); assert_eq!(round(ppo.next(7.0).into()), (28.62, 17.18, 11.44)); assert_eq!(round(ppo.next(6.7).into()), (24.01, 19.91, 4.09)); assert_eq!(round(ppo.next(6.5).into()), (17.84, 19.08, -1.24)); fn round(nums: (f64, f64, f64)) -> (f64, f64, f64) { let n0 = (nums.0 * 100.0).round() / 100.0; let n1 = (nums.1 * 100.0).round() / 100.0; let n2 = (nums.2 * 100.0).round() / 100.0; (n0, n1, n2) }
Implementations
impl PercentagePriceOscillator
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Trait Implementations
impl Clone for PercentagePriceOscillator
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fn clone(&self) -> PercentagePriceOscillator
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fn clone_from(&mut self, source: &Self)
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impl Debug for PercentagePriceOscillator
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impl Default for PercentagePriceOscillator
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impl Display for PercentagePriceOscillator
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impl<T: Close, '_> Next<&'_ T> for PercentagePriceOscillator
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impl Next<f64> for PercentagePriceOscillator
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impl Reset for PercentagePriceOscillator
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Auto Trait Implementations
impl RefUnwindSafe for PercentagePriceOscillator
impl Send for PercentagePriceOscillator
impl Sync for PercentagePriceOscillator
impl Unpin for PercentagePriceOscillator
impl UnwindSafe for PercentagePriceOscillator
Blanket Implementations
impl<T> Any for T where
T: 'static + ?Sized,
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T: 'static + ?Sized,
impl<T> Borrow<T> for T where
T: ?Sized,
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T: ?Sized,
impl<T> BorrowMut<T> for T where
T: ?Sized,
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T: ?Sized,
pub fn borrow_mut(&mut self) -> &mut T
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impl<T> From<T> for T
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impl<T, U> Into<U> for T where
U: From<T>,
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U: From<T>,
impl<T> ToOwned for T where
T: Clone,
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T: Clone,
type Owned = T
The resulting type after obtaining ownership.
pub fn to_owned(&self) -> T
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pub fn clone_into(&self, target: &mut T)
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impl<T> ToString for T where
T: Display + ?Sized,
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T: Display + ?Sized,
impl<T, U> TryFrom<U> for T where
U: Into<T>,
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U: Into<T>,
type Error = Infallible
The type returned in the event of a conversion error.
pub fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>
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impl<T, U> TryInto<U> for T where
U: TryFrom<T>,
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U: TryFrom<T>,