Elder-Ray: how far buyers pushed the high above the consensus value, and how
far sellers pushed the low below it, the consensus being an EMA of the close.
Both print from the EMA's first bar, length - 1. Bear power never exceeds
bull power, since a bar's low never tops its high, so where both are above
zero the bull column is the taller and where both are below the bear column
is the deeper.
Elder-Ray: how far buyers pushed the high above the consensus value, and how far sellers pushed the low below it, the consensus being an EMA of the close.
bull = high - ema(close, length) bear = low - ema(close, length)
Both print from the EMA's first bar,
length - 1. Bear power never exceeds bull power, since a bar's low never tops its high, so where both are above zero the bull column is the taller and where both are below the bear column is the deeper.