Linear Regression Channel - Auto Volume Based

Based on oryginal TV indicator BUT with a little twist. ;)

I really like the regression channel - but the problem is that the length needs to be always manually adjusted.
In this script I try to solve this issue.

This is modified version on TV indicator - Linear Regression Channel.

The main difference is that now you don't get static length - it is automatically adjuested to the recent price action (determined by highest volume in last 300 bars).