Vortex Indicator
This chart shows the +VI (green) and -VI (red) components of the Vortex Indicator discussed in the article titled The Vortex Indicator in the January 2010 Issue of Stocks and Commodities magazine, by Etienne Botes and Douglas Siepman. The authors suggest taking a long position when +VI crosses above -VI, and a short when -VI crosses above +VI. The +VI and -VI are implemented with two custom indicators. The syntax for +VI is simply: SUM(HI - LO.1, 14) / SUM(TR, 14) While the syntax for -VI is: SUM(HI.1 - LO, 14) / SUM(TR, 14)