# Hammer

`hammer`

A long lower wick after a fall.

## Inputs

| Name | Type | Default | Range |
| --- | --- | --- | --- |
| wick_mult | float | 2 | 0 to 10 |
| opposite_pct | float | 25 | 0 to 100 |
| body_zone_pct | float | 33.3 | 1 to 100 |
| trend_bars | int | 3 | 1 to 50 |

## Outputs

| Name | Kind |
| --- | --- |
| hammer | event |

Warm-up: trend_bars + 1 bars (4 at the defaults).

Repaints: No.

## Formula

body = |close - open|, range = high - low, upper wick = high - max(open, close), lower wick = min(open, close) - low

lower wick >= wick_mult * body, upper wick <= opposite_pct / 100 * range, the body inside the top body_zone_pct of the range, and after a fall: close[i-1] < close[i-1-trend_bars]

Found: 1

A bar whose high equals its low, or that has a missing price, is never part of a pattern. Computed on the prices the bars are drawn with: on Heikin-Ashi or Renko bars those are the built candles.