Studies · Trend
Range Action Verification Index (RAVI)
ravi · Chande's RAVI — the two SMAs' gap as a percent of the slow one
Drawn in its own panelReads one column (close here)
Hover the chart to read values · practice data: a seeded random walk with no overnight gaps
What it measures
The gap between a short and a long simple moving average, as a percentage of the long one, with the sign removed. It answers only "is there a trend?" and not which way.
How traders use it
- Chande's rule: above 3% the market is trending, below 3% it is ranging.
- Used as a filter so trend-following entries are only taken when RAVI says a trend is present.
Parameters
| Name | Value | Default | Allowed | What it does |
|---|---|---|---|---|
| shortPeriod | 7 | ≥ 1 usual 3–20 | The fast simple moving average. Chande used 7 (about a week of daily bars). | |
| longPeriod | 65 | ≥ 1 usual 20–130 | The slow simple moving average. Chande used 65 (about a quarter). |