The Detrend Price Osc indicator is similar to a moving average, in that it filters out trends in prices to more easily identify cycles. The indicator is an attempt to define cycles in a trend by drawing a moving average as a horizontal straight line and placing prices along the line according to their relation to a moving average. It provides a means of identifying underlying cycles not apparent when the moving average is viewed within a price chart. Cycles of a longer duration than the Length (number of bars used to calculate the Detrend Price Osc) are effectively filtered or removed by the oscillator.
You can change long to short in the Input Settings Please, use it only for learning or paper trading. Do not for real trading.