This script identifies the distribution days and follow through day.
DD count helps a trader identify a general trend of the market. A distribution day is flagged when index drops more than 0.2% and above average vols than previous day. 4 or more distribution days shows choppiness in the market and longs are unlikely to work. A follow through day on the other hand shows strong buying emerges from the bottom. An FTD is flagged when index moves up 1.5% or more on higher vols than previous day.
Once an FTD is seen DD count goes back to zero.
DD are shown as Yellow flag here. FTD are shown as Blue flag,