Instantaneous Trendline (iTrend)

The early identification of a trend then depends on a valid measurement of short-term cyclic activity. There are two ways to do so, either by cycle elimination or by spectrum analysis. Of the two, cycle elimination is by far the easier.The identification of the trend is that easy. One can eliminate the cyclic component when use the average over the cycle length.One could adjust the average as the cycle length varies and plot the results day-by-day. The author called the result an "instantaneous trendline".You can read more about this approach in Early Trend Identification by John F. Ehlers article published in 10/1990 Stocks&Commodities magazine.