Author: Flanel
Conditions are as it follows:
1. A long white line, a hammer or a a bullish engulfing line
2. Volume levels at least 2 times higher than average
3. Positive variation of at least -1% over the previous candlestick
REM Condition 1. A long white line, a hammer or a bullish engulfing line
white = close > open AND (close - open) > (range * 3 / 4)
hammer = (open - low) >= (2 * ABS(close - open)) AND (high - close) <= (range / 8)
engulfing = (close[1] < open[1]) AND (open < close[1]) AND (close > open[1])
c1 = white OR hammer OR engulfing
REM Condition 2. Volume levels at least 2 times higher than average
c2 = VOLUME > 2 * AVERAGE(VOLUME)
REM Condition 3. Positive variation of at least 1% over the previous candlestick
c3 = VARIATION > 0.1
SCREENER[c1 AND c2 AND c3](VARIATION)