Stochastic Oscillator
get_stoch(quotes, lookback_periods=14, signal_periods=3, smooth_periods=3)
Parameters
name  type  notes 

quotes 
Iterable[Quote]  Iterable(such as list or an object having __iter__() ) of the Quote class or its subclass. • Need help with pandas.DataFrame? 
lookback_periods 
int, default 14  Lookback period (N ) for the oscillator (%K). Must be greater than 0. 
signal_periods 
int, default 3  Smoothing period for the signal (%D). Must be greater than 0. 
smooth_periods 
int, default 3  Smoothing period (S ) for the Oscillator (%K). “Slow” stochastic uses 3, “Fast” stochastic uses 1. Must be greater than 0. 
Historical quotes requirements
You must have at least N+S
periods of quotes
to cover the warmup periods.
quotes
is an Iterable[Quote]
collection of historical price quotes. It should have a consistent frequency (day, hour, minute, etc). See the Guide for more information.
Returns
StochResults[StochResult]
 This method returns a time series of all available indicator values for the
quotes
provided. 
StochResults
is just a list ofStochResult
.  It always returns the same number of elements as there are in the historical quotes.
 It does not return a single incremental indicator value.
 The first
N+S2
periods will haveNone
Oscillator values since there’s not enough data to calculate.
StochResult
name  type  notes 

date 
datetime  Date 
oscillator or k

float, Optional  %K Oscillator over prior N lookback periods 
signal or d

float, Optional  %D Simple moving average of Oscillator 
percent_j or j

float, Optional  %J is the weighted divergence of %K and %D: %J=kFactor×%KdFactor×%D

Note: aliases of k
, d
, and j
are also provided. They can be used interchangeably with the standard outputs.
Utilities
See Utilities and Helpers for more information.
Example
from stock_indicators import indicators
# This method is NOT a part of the library.
quotes = get_history_from_feed("SPY")
# calculate STO %K(14),%D(3) (slow)
results = indicators.get_stoch(quotes, 14, 3, 3)
About Stochastic Oscillator
Created by George Lane, the Stochastic Oscillator is a momentum indicator that looks back N
periods to produce a scale of 0 to 100. %J is also included for the KDJ Index extension.
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