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Technical Chart Indicators and Studies Find descriptions, formulas, parameters, and other help for the indicators and studies used by the Barchart.com Technical Charts application below. Interactive Charts, however, share many of the same studies with Technical Charts. Some of the parameters may be slightly different between the two versions of charts. Unless otherwise specified, the parameters shown in this documentation are those used by the Technical Chart program. * Available in Interactive Charts only Note:When adding multiple moving averages on a chart, the lines will be colored in this order: red, green, blue, purple, orange.
When adding an indicator to a Technical Chart, you can change the parameters of the study by clicking on the indicator name. Welles Wilder VolatilityIndicator Type: Overlay - Interactive Charts Only Welles Wilder Volatility is a trend-following system. It is also a true reversal system which means that the position is reversed at every stop. This indicator is intended to measure true range over time. The idea is if volatility is high, the range is expanding and the opposite holds. If the dots are above the chart, this suggests that the security is in a bearish trend. Similarly if the dots are below the chart this suggests a bullish trend. VI today = N*VI previous+TR1/X Where VI = Volatility Index X = Time period N= Time Period-One Unit TR1 = Today's True Range Default Parameters: 14,20 Sample Chart:   TOP
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