||Iterable[Quote]||Iterable(such as list or an object having
• Need help with pandas.DataFrame?
||int, default 13||Number of periods (
Historical quotes requirements
You must have at least
N+100 periods of
quotes, whichever is more, to cover the convergence periods. Since this uses a smoothing technique, we recommend you use at least
N+250 data points prior to the intended usage date for better precision.
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.
- This method returns a time series of all available indicator values for the
ElderRayResultsis just a list of
- 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-1periods will have
Noneindicator values since there’s not enough data to calculate.
Convergence warning: The first
N+100periods will have decreasing magnitude, convergence-related precision errors that can be as high as ~5% deviation in indicator values for earlier periods.
||float, Optional||Exponential moving average of Close price|
||float, Optional||Bull Power|
||float, Optional||Bear Power|
See Utilities and Helpers for more information.
from stock_indicators import indicators # This method is NOT a part of the library. quotes = get_history_from_feed("SPY") # calculate ElderRay(13) results = indicators.get_elder_ray(quotes, 13)
About Elder-ray Index
Created by Alexander Elder, the Elder-ray Index, also known as Bull and Bear Power, depicts buying and selling pressure. [Discuss]