//@version=4
study("Drawing horizontal lines from signal entry points", overlay=true)

// some basic indicator setup of MA's
a = ema(close,14)
b = ema(close, 34)

// some MA plotting....
plot(a)
plot(b)

//cross of MAs as event trigger
cross_o = crossover(a,b)
cross_u = crossunder(a,b)

// determining the length of the line - you can replace the cross_o and cross_u with any other event
l1 = barssince(cross_o)
l2 = barssince(cross_u)


// drawing the horizontal lines - you can replace the open also with high, low, and close OHLC values
line lo = na
line lu = na
if cross_o or cross_u
    lo := line.new(bar_index[l1], open[l1], bar_index, open[l1], width = 4)
    lu := line.new(bar_index[l2], open[l2], bar_index, open[l2], width = 4)