The original code calculates an indicator based on two key factors: the difference between the price and the Moving Average (MA), and the difference between a fast and slow MA. The final value provided by this code is a combination of these two measurements.
The new code introduces a weight parameter which allows you to control the balance between these two measurements. This weight can range from -1 to 1:
When the weight is -1, the final value only considers the difference between the price and the MA, disregarding the difference between the fast and slow MAs.
When the weight is 1, the final value only takes into account the difference between the fast and slow MAs, ignoring the difference between the price and the MA.
When the weight is 0, the final value is a balanced average of both measures, behaving just like the original code.
Importantly, the weight doesn't have to be just -1, 0, or 1. Any value in between is valid, allowing for a gradual bias towards one measure or the other. For example, a weight of 0.3 would calculate a final value that leans towards the difference between fast and slow MAs, but still considers the difference between the price and the MA. This provides more flexibility for fine-tuning the balance based on your analysis needs.