How to get the lowest value between two points?

Question

This is the code, comments are from the original script (how to find the highest value between two points). Right now the lowest value between two points is...zero and I can't see the logic behind it.

//@version=4

study("Help prof (My Script)", overlay = true)

var bool    track       = false
var float   highest_sell = 10e10            //from highest_buy = na

ema1 = ema(close, 20)
ema2 = ema(close, 50)

buy  = crossover(ema1, ema2)
sell = crossunder(ema1, ema2)

if sell               
    track := true
else if buy
    track := false                           //from buy track = true and sell track = false

highest_sell := track ? min(nz(highest_sell), low) : na      //from highest_buy := track ? ma(nz(highest_buy), high) : na

plot(ema1)
plot(ema2,        color=color.yellow)
plot(highest_sell, color=color.purple, style=plot.style_linebr)

sell_entry = valuewhen(sell, close, 0)
plot(sell_entry, color = sell_entry == sell_entry[1] and ema1 < ema2? color.lime :na)

if buy 
    label1 = label.new(bar_index, highest_sell[1], text=tostring(highest_sell[1] - sell_entry[1]) , style=label.style_label_up, color=color.black, textcolor=color.white)

Indeed, the absolute lowest value in math is 0, but according to your cci example, the min lowest value of cci is... the lowest value of it, obviously, but for a reason, does not work the same with `min(low, ...)` (it's working with `max(low, ...)`, but it's useless). — edward, Jan 29 '21 at 13:55
With `cci` it works because the values are negative. I was once again convinced that there are no universal answers. — AnyDozer, Jan 29 '21 at 14:23

score 2 · Accepted Answer · answered Jan 29 '21 at 14:19

//@version=4

study("Help prof (My Script)", overlay = true)

var bool    track       = false
var float   highest_sell = 10e10            //from highest_buy = na

ema1 = ema(close, 20)
ema2 = ema(close, 50)

buy  = crossover(ema1, ema2)
sell = crossunder(ema1, ema2)

if sell               
    track := true
else if buy
    track := false                           //from buy track = true and sell track = false

highest_sell := track ?  min(nz(highest_sell), low) : 10e10      //from highest_buy := track ? ma(nz(highest_buy), high) : na

plot(ema1)
plot(ema2,        color=color.yellow)
plot(track ? highest_sell : na , color=color.purple, style=plot.style_linebr)

sell_entry = valuewhen(sell, close, 0)
plot(sell_entry, color = sell_entry == sell_entry[1] and ema1 < ema2? color.lime :na)

if buy 
    label1 = label.new(bar_index, highest_sell[1], text=tostring(-highest_sell[1] + sell_entry[1]) , style=label.style_label_up, color=color.black, textcolor=color.white)

How to get the lowest value between two points?

1 Answers1