roc
Rate of change (%)
Reference/Oscillators/Function
roc(source, length)
Percent change versus length bars ago. Default 9. Short form `roc(9)` uses close.
Parameters
| Name | Type | Description |
|---|---|---|
sourceoptional | series default close | Series to use. Omit it when the first argument is a number — ema(9) means ema(close, 9). |
length | int default 9 | Lookback in bars. Default 9. |
Return value
series
Short form: if the first argument is a number, Dovee uses close as the source.
Example
oscillator line = roc(9) plot line as "Rate of change (%)" level 0 as "Zero" gray