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The Elder-Ray Index contains the bull and the bear power. Both are calculated based on the EMA of the close price.
The default window is 13.
Formular:
Examples:
df['eribull']
retrieves the 13 periods bull powerdf['eribear']
retrieves the 13 periods bear powerdf['eribull_5']
retrieves the 5 periods bull powerdf['eribear_5']
retrieves the 5 periods bear power