I want to raise an alert when 3 indicators show the same point using 3 indicators with different parameters, how should I set the conditions?
Here are the 3 Bollinger Bands. Same indicator, but Each parameter is 20.40.60, which has a different value. If you look at the place marked, this is where the bottom line of each indicator meets. I would like to know the price at this time.
The calcul in Pinescript are discrete, at the end of each bar.
So you can't calculate when each indicator's line 'meet'.
You should calculate the average distance between your 3 lines and decide when this distance is so little that you can consider your 3 lines have met.
Here is a exemple with 3 bottom line of the bolinger band indicator.
In this exemple, we consider that the 3 lines have met when the average distance between the 3 lines is under 8 and then plot a red line :
//@version=5
indicator("My script", overlay=true)
level = input.float(8,"Level under which you consider the 3 bb are touching themselves")
[middle1, upper1, lower1] = ta.bb(close,20,2)
[middle2, upper2, lower2] = ta.bb(close,40,2)
[middle3, upper3, lower3] = ta.bb(close,60,2)
plot(lower1)
plot(lower2)
plot(lower3)
distance = math.avg(math.abs(lower1-lower2), math.abs(lower1-lower3), math.abs(lower2-lower3))
price = math.avg(lower1, lower2, lower3)
plot(distance>level?na:price,color=color.red,style=plot.style_linebr, linewidth = 4)
