Help With Plotting only select Bars

[QknEasy]

I'm looking to only plot specifically selected (continuous) group of Bars. Eventually these will be made variables depending on the 5EMA changes.
For simple example
Input s1 = -5 Start
Input e1 = -3 End
define nb=(e1-s1)+1 number of bars 3

Without going into all the coding detail I have calculated the best fit linear regression line between these points and have generated among other items the following;
b1 Slope
yint1 Y-Intercept

I tried the formula for a line y=mx+b and tried to incorporate BarNumbers(3) but I kept getting a line across the entire chart
I need help on the plot statement that would only show the "straight" line for Bars -5,-4,-3.
Let me know if I need more information

 

[halcyonguy]

I need help on the plot statement that would only show the "straight" line for Bars -5,-4,-3.
Let me know if I need more information

need more info,
not sure what bars -3,-4,-5 is

is that a reference from the last bar?
somewhere on here i have a study that draws a line , on several bars after the last bar. could change the offsets to find a group of bars before the last bar.

found it
https://usethinkscript.com/threads/expansion-area-ma-lines-bubble.11201/#post-97853

 

[QknEasy]

need more info,
not sure what bars -3,-4,-5 is

is that a reference from the last bar?
somewhere on here i have a study that draws a line , on several bars after the last bar. could change the offsets to find a group of bars before the last bar.

found it
https://usethinkscript.com/threads/expansion-area-ma-lines-bubble.11201/#post-97853

I really meant the bars to be positive i.e. looking back at 3 days in the past and drawing the line for only those days. Thanks I'll look at the study