PineScript v5 - Detect Label/Shape etc on previous candles

[DonBastardo]

Gents,

I am new to pine script 5 and encountered my first challange.

I want to build a 1min strategy around this newly found indicator "Nadaraya-Watson Envelope" by LuxAlgo:

Code: Select all

// This work is licensed under a Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0) https://creativecommons.org/licenses/by-nc-sa/4.0/
// © LuxAlgo
//@version=5

indicator("Nadaraya-Watson Envelope [LuxAlgo]",overlay=true,max_bars_back=1000,max_lines_count=500,max_labels_count=500)
length = input.float(500,'Window Size',maxval=500,minval=0)
h      = input.float(8.,'Bandwidth')
mult   = input.float(3.) 
src    = input.source(close,'Source')


up_col = input.color(#39ff14,'Colors',inline='col')
dn_col = input.color(#ff1100,'',inline='col')
disclaimer = input(false, 'Hide Disclaimer')
//----
n = bar_index
var k = 2
var upper = array.new_line(0) 
var lower = array.new_line(0) 

lset(l,x1,y1,x2,y2,col)=>
    line.set_xy1(l,x1,y1)
    line.set_xy2(l,x2,y2)
    line.set_color(l,col)
    line.set_width(l,2)

if barstate.isfirst
    for i = 0 to length/k-1
        array.push(upper,line.new(na,na,na,na))
        array.push(lower,line.new(na,na,na,na))
//----
line up = na
line dn = na
//----
cross_up = 0.
cross_dn = 0.
if barstate.islast
    y = array.new_float(0)
    
    sum_e = 0.
    for i = 0 to length-1
        sum = 0.
        sumw = 0.
        
        for j = 0 to length-1
            w = math.exp(-(math.pow(i-j,2)/(h*h*2)))
            sum += src[j]*w
            sumw += w
        
        y2 = sum/sumw
        sum_e += math.abs(src[i] - y2)
        array.push(y,y2)

    mae = sum_e/length*mult
    
    for i = 1 to length-1
        y2 = array.get(y,i)
        y1 = array.get(y,i-1)
        
        up := array.get(upper,i/k)
        dn := array.get(lower,i/k)
        
        lset(up,n-i+1,y1 + mae,n-i,y2 + mae,up_col)
        lset(dn,n-i+1,y1 - mae,n-i,y2 - mae,dn_col)
        
        if src[i] > y1 + mae and src[i+1] < y1 + mae
            label.new(n-i,src[i],'▼',color=#00000000,style=label.style_label_down,textcolor=dn_col,textalign=text.align_center)
        if src[i] < y1 - mae and src[i+1] > y1 - mae
            label.new(n-i,src[i],'▲',color=#00000000,style=label.style_label_up,textcolor=up_col,textalign=text.align_center)
    
    cross_up := array.get(y,0) + mae
    cross_dn := array.get(y,0) - mae

alertcondition(ta.crossover(src,cross_up),'Down','Down')
alertcondition(ta.crossunder(src,cross_dn),'Up','Up')

//----
var tb = table.new(position.top_right, 1, 1
  , bgcolor = #35202b)

if barstate.isfirst and not disclaimer
    table.cell(tb, 0, 0, 'Nadaraya-Watson Envelope [LUX] Repaints'
      , text_size = size.small
      , text_color = #cc2f3c)

I need help with 2 things.

1. How can I check/verify that the prev candle or within the last x candles 1 or more candles have a signal (red or green triangle) printed? I want to use this information as one of the conditions for entries.

2. How can I check if a candle hast closed above or below the green or red line?

I appreciate any help.

Thanks, DonBastardo

[DonBastardo]

Is there no one who can help?

[Steve Burman]

Hi Don,

As you can see in the above script, there is no indenting for if and for loops making it very hard to read as I can't tell if there are embedded if and for loops or whether they are all independant. Can you resend it as the script should be as I can't get it to compile

[DonBastardo]

Hi Steve,

sorry my bad - now the code is shown correctly. Thanks for taking the time to reply.
KR

[Steve Burman]

Thanks,

This script is quite complicated and doesn't have any comments on what it is doing which makes it difficult to read for novices and for those with more experience.

When I run this I don't see any red or green triangles. What market are you running this on and what time frame?

It looks like he already has set alerts if the price crosses over or under the red or green line as follows:

alertcondition(ta.crossover(src,cross_up),'Down','Down')
alertcondition(ta.crossunder(src,cross_dn),'Up','Up')

[DonBastardo]

OK, thats strange it works on different markets - EURUSD, Gold, US30 etc and different TF´s - the only thing is, that its limited to 500 bars
I wanted to use it on the 1 min TF

https://imgbox.com/VzgqyOUK

[Steve Burman]

Yes, TV labels and other objects have a 500 limit which is appalling especially on Pro+ and higher accounts

This is what I get when I run it on the e-mini or USDEUR https://imgbox.io/ib/0XPQ44nD61