TWR is calculated based on the color of the previous bar and the closing price of the current bar, ignoring the other price information, and actually redrawing the candle chart using the closing price.
Define the color of the first bar:
Open > Close - Green; Open < Close - Red;
Note (just to help understand, the actual code's index order is the opposite):
The calculation principle is as follows:
Figure 1: calculation principle of upward trend
Figure 2: calculation principle of down trend
Classic turning signal of indicators:
Figure 3: upward trend signal turn
Figure 4: downtrend signal turn
3.In fact, we can add EMA to filter the noise signal and improve the quality of the signal.
If TWR give us the trend signal, and the bar closes above the EMA or under the EMA, then the trend will be true.
Figure 5: example
The QQE (Quantitative Qualitative Estimator) indicator consists of a smoothed Relative Strength Index (RSI) indicator and two volatility-based trailing levels (fast and slow).Swing Line - Histogram
Ron Black's Swing Line indicator made as histogram indicator.