This analysis tool takes 4 local samples to product a trend line (green) and a counter-trend line (red). The concept of this is similar to finding wedges where 4 points (usually alternating highs and lows) are used to form the wedge. The purpose of this is to give a general long term direction and pattern.
In true TradingView spirit, the author of this script has published it open-source, so traders can understand and verify it. Cheers to the author! You may use it for free, but reuse of this code in publications is governed by House rules. You can favorite it to use it on a chart.
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