Harmonic Pattern Indicator Explained Trading Indicator is an effort of developer to create trading tools comply with particular theory  or trading strategy or trading ideas. There is always gap between theory (i.e. ideas or strategy) and practice. Not all the harmonic pattern indicators are the same. In the past the main variations of Harmonic pattern indicators can be categorized as following four types. Type 1:    Non lagging (fast signal) but repainting – option to enter from turning point. Indicator does not show the failed pattern in chart and last pattern can repaint. Type 2:   Lagging (slow signal) but non repainting – no option to enter at turning point (i.e. early signal). Indicator does not show the failed pattern but last pattern does not repaint. Type 3:  Detecting pattern at point C but repainting – option to enter at turning point. Indicator detect pattern too early and you have to wait quite bit of time until price move near the point D. In fact,