Rotation factor

A rotation factor is a number designed to keep track of price trends by periods . There is an up rotation factor, a down rotation factor, the total being the sum of the two. The up (down) rotation factor is computed for a period as follows. If the high (low) is greater than the high (low) of the preceding period, add 1. If the high (low) is less than the high (low) of the preceding periods, subtract 1. If the high (low) is the same as the high (low) of the preceding period, add zero. A large positive up (down) rotation factor means there is a trend to higher highs (lows). A large negative up (down) rotation factor means there is a trend to lower highs (lows).