Swing Indicator (2 before, 1 after) v2 with Dong-Dang
Features
Detection Swing (swing HIGH is the highest bar among 2 bars before and 1 bar after, and swing LOW is the lowest bar among 2 bars before and 1 bar after)
Dong-Dang (The line plot switch between a swing HIGH and LOW ==> represents the price movement)
Fixes *fix swing detection from the last version when there are 2 or more bars that have the same high or low price
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