To Download and Import the Chart Definition below....click on the link below the chart image to open up the definition in a browser window. Then select all the definition text (with Ctrl-A or Edit:Select All). Then copy the definition to your clipboard (with Ctrl-C or Edit:Copy). Then, in Investor/RT, choose "File: Import: Definition from Clipboard" from the main menu.  The chart should appear.

Value Chart - 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)