The indicator builds a Raff channel based on a linear regression. The red trend line can be used to make a purchase decision or
selling inside the channel when the price approaches it. You can use the settings to set the channel width based on the deviation coefficient from the baseline or
by the maximum and minimum extremum. You can also enable the continuation of the channel to the right of the current prices.

The Raff regression channel indicator is a convenient tool that greatly facilitates the work of modern users.
the trader. It can be used on almost any chart, possibly in conjunction with other indicators.

Input parameters:

Indicator buffers (for programmers):

   SetIndexBuffer(0,Base_line);
   SetIndexEmptyValue(0,0.0);
   SetIndexLabel(0,"Base Line");
   
   SetIndexBuffer(1,Trend_line);
   SetIndexEmptyValue(1,0.0);
   SetIndexLabel(1,"Trend Line");
   
   SetIndexBuffer(2,Res_line);
   SetIndexEmptyValue(2,0.0);
   SetIndexLabel(2,"Resist Line");