Popgun Bar Pattern

I created this script to research the trading effectiveness of the Popgun Bar Pattern.

The Popgun Bar Pattern is found when 3 candlesticks in order form the following pattern:

0. Any bar that is then followed by:
1. An inside bar. This is a bar that is completely engulfed by the bar before it. It will have a lower high and a higher low than the previous bar.
2. An outside bar immediately after. This is a bar that completely engulfs the prior inside bar. It will have a higher high and a lower low than the previous bar.

Simply put, the Popgun Bar Pattern is an inside bar followed by an outside bar.

I would highly recommend incorporating this signal as a "trigger" for existing technical analysis. Used in isolation it may not have a high probability of success.

To make it more effective as a trigger to a trading signal I incorporated into my code an Entry, Stop, and a Target dot.

• The Entry dot is offset from the low of a bearish Popgun Bar Pattern or the high of a bullish Popgun Bar Pattern by a factor of ATR. The default ATR percentage is 33% but can be adjusted.
  
• The Stop dot is based on the recent highest high (bearish) or lowest low (bullish) of a set range (default is 9 bars) plus/minus the ATR percentage buffer.
  
• The Target dot is automatically calculated from the entry based on a configurable reward factor (default is 3) from the entry to stop distance. This projects a potential 3:1 reward/risk trade by default.
  

There is an additional alert condition which can be configured at the end of the script.