Indicators often unreasonably accept a positive scale, although in fact they are symmetrical.
The standard RSI also has this property. This indicator works in a symmetrical scale relative to zero,
but at the same time it completely repeats the form of the original. In this indicator, the important levels are 20 and -20.
This is very convenient when using it in automatic trading, since the use of a single threshold during optimization eliminates over-optimization.
In addition, the algorithm for calculating the indicator is optimized (hidden calculation buffers are excluded), which saves memory resources.
Parameters:
RSI Period – the period of the indicator.