wma

Weighted Moving Average

`wma(source, periods)`

Parameters

Name	Type	Description
`source`	source	Data series to average - price field (close, high, low, open) or indicator output
`periods`	int	Number of periods for the WMA calculation (must be > 0)

Formula

```
WMA = (P1 * n + P2 * (n-1) + ... + Pn * 1) / (n + (n-1) + ... + 1)
where n = periods, P1 = most recent price, Pn = oldest price
```

The most recent value has weight n, the previous has weight n-1, and so on.

Examples

x = wma(close, 10);   # 10-period WMA of closing prices
y = wma(high, 20);    # 20-period WMA of highs
close > wma(close, 50);  # Price above 50-period WMA

Returns

Float value representing the weighted moving average ## References - TradingView: `ta.wma(source, length)` - More responsive to recent changes than SMA but less than EMA

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