In Duffy's book "The Trading Advantage", he shows 2 geometrical constructions for predicting future turning points in price.
Square and Angle Change in Trend Indicator: Draw a trend line between 2 pivot lows and a horizontal line at the intervening high. Where the lines cross in the future is a potential pivot point for prices. Same with 2 pivot highs and an intervening low. Dual Angle Change in Trend Indicator: Draw 2 trend lines that are angled toward each other, at least one of the trend lines must touch 3 pivot points (a triangle). Where the lines cross in the future is a potential pivot point for prices. Has anyone created an AFL for these indicators? Is it even possible? Bill
