Impl Volty/Historical Volty (Indicator)
DisclaimerInput Information
| Name | Expression | Default | Description |
| StdDevLength | Numeric | 30 | Number of bars to include in calculation of the standard deviation of closing prices. |
| HiPercent | Numeric | 140 | High reference value used to plot the high reference line of the indicator ratio in a chart and to set the high plot color for a chart line or cell background. |
| LoPercent | Numeric | 85 | Low reference value used to plot a low reference line of the indicator ratio in a chart and to set the low plot color for a chart line or cell background. |
| UseGradientColoring | Numeric | 1 | Set to 1 to enable gradient (blended) coloring; set to 0 for no gradient coloring. |
| UpColor | Numeric | Yellow | When gradient coloring is enabled, this is the chart plot color or grid cell background color to use for indicator values that approach the HiPercent of the ratio. |
| DnColor | Numeric | Magenta | When gradient coloring is enabled, this is the chart plot color or grid cell background color to use for indicator values that approach the LoPercent of the ratio. |
| GridForegroundColor | Numeric | Black | Color to use for numbers in RadarScren cells when gradient coloring is enabled. |
Description
The Impl Volty/Historical Volty oscillator is an options-related indicator that plots the ratio of the current implied volatility of the options on an underlying to the annualized standard deviation of percentage change in closing prices of the underlying. The ratio is plotted as a percentage.
This indicator uses calculations that expect it to be plotted only using a daily, weekly, or monthly interval.
Plot Information
| Number | Name | Default Color | Description |
| Plot1 | IV/HistVol | Yellow/Magenta | Plots the indicator ratio value. |
| Plot2 | Hi Pct | Dark Green | Plots the high percentage reference line. |
| Plot3 | Lo Pct | Dark Green | Plots the low percentage reference line. |
When applied to a chart, this indicator displays three plots in a separate subgraph from the price data.
When gradient coloring is disabled, the Plot1 color is determined by settings in indicator properties dialog box.
If gradient coloring is enabled, the RadarScreen cell background is colored a mixture of UpColor and DnColor. Similarly, in Charting, the plot color is a mixture of UpColor and DnColor. As the Plot1 value approches HiPercent, the cell background (RadarScreen) or plot (Charting) will be colored more like UpColor. As the value approaches LoPercent, the color will approach DnColor. Values of the ratio that are between LoPercent and HiPercent will yield colors that are a mixture of UpColor and DnColor.