使用多个数组元素为相同符号生成多行（Pine 脚本）

2024-04-12

基于这个解决方案 https://stackoverflow.com/questions/66370664/how-to-overcome-compiled-script-code-is-too-long-in-pine-script来自 Bjorn 在使用时在代码中包含更多数组元素float我试图为同一符号绘制多条线，但似乎只处理第一组数组元素。有没有办法为相同的符号生成更多行（最多为数组中符号出现的次数）？下面包含示例数组。 QQQ 有 3 条线，AMZN 有 2 条线，MSFT 只有 1 条线。

//@version=4
study("Lines", "LI", true)

x1_date = timestamp(2020, 10, 30, 9, 30)
x2_date = timestamp(2021, 2, 16, 9, 30)

var string[]    a_ticker            = array.new_string()
var int[]       a_x1                = array.new_int()
var int[]       a_x2                = array.new_int()
var float[]     a_y1                = array.new_float()
var float[]     a_y2                = array.new_float()
var string[]    a_str               = array.new_string()
var string[]    a_digits_str        = array.new_string()
var int[]       a_digits_int        = array.new_int()
var line        myLine              = line.new(x1_date, na, x2_date, na, extend=extend.both, color = color.yellow, xloc = xloc.bar_time)

var string[]    a_str_set_ticker    = array.new_string()
var string[]    a_str_set_x1        = array.new_string()
var string[]    a_str_set_x2        = array.new_string()
var string[]    a_str_set_y1        = array.new_string()
var string[]    a_str_set_y2        = array.new_string()


// Initializes the a_digits_int array
f_init_digits_int() =>
    for x = 0 to 9
        array.push(a_digits_str, tostring(x))
        array.push(a_digits_int, x)

// Converts a string containing a digit, to an integer
f_digitstr2int(_dstr) => 
    array.get(a_digits_int, array.indexof(a_digits_str, _dstr))

// Converts a string containing an integer, to an integer
f_str2int(_s) => 
    int multiplier = 1
    int number = 0

    // Initialize the a_digits_int array in case it hasn't been done yet.
    if not array.size(a_digits_int) 
        f_init_digits_int() 
        
    a = str.split(_s,"")
    array.reverse(a)

    for x = 0 to array.size(a)-1
        digit_str = array.get(a,x)
        number := number + multiplier * f_digitstr2int(digit_str)
        multiplier := multiplier * 10
        
    number        

// Converts a string containing a float, to a float
f_str2float(_s) =>
    float   number          = na
    string  s_absolute      = str.replace_all(_s,"-","")
    bool    is_negative     = str.length(s_absolute) != str.length(_s)
    
    a_split = str.split(s_absolute,".")
    if array.size(a_split) > 1 // _s has a decimal separator
        number := f_str2int(array.get(a_split,0)) + f_str2int(array.get(a_split,1)) / pow(10,str.length(array.get(a_split,1)))
    else // _s does not have a decimal separator, so it's an integer
        number := f_str2int(_s)
    
    number * (is_negative ? -1 : 1)

// Initialize the data
f_init_data() =>
    // 4000 tickers, broken down into 5 sets, because a string has a max size of 4096 characters.
    // 800 tickers, set 1
    array.push(a_str_set_ticker, "QQQ,QQQ,QQQ,AMZN,AMZN,MSFT")
    array.push(a_str_set_y1, "267,300,222,3000,2000,237")
    array.push(a_str_set_y2, "338.2,200,111,2500,1000,222")

if barstate.islast
    // Initialization
    f_init_data()

    // Process the data
    for z = 0 to array.size(a_str_set_ticker)-1
        a_ticker := array.concat(str.split(array.get(a_str_set_ticker, z),","), a_ticker)

        a_str := str.split(array.get(a_str_set_y1, z),",")
        for i = 0 to array.size(a_str)-1
            array.push(a_y1,f_str2float(array.get(a_str,i)))

        a_str := str.split(array.get(a_str_set_y2, z),",")
        for i = 0 to array.size(a_str)-1
            array.push(a_y2,f_str2float(array.get(a_str,i)))

    // Draw line 1
    if array.includes(a_ticker, syminfo.ticker)
        idx = array.indexof(a_ticker, syminfo.ticker)
        y1  = array.get(a_y1, idx)
        y2  = array.get(a_y2, idx)
        line.set_y1(myLine, y1)
        line.set_y2(myLine, y2)

Edit 1:

使用 Bjorn 的解决方案以及示例数组 SET 1 和 SET 2 不会产生预期结果。 SET 2 具有与 SET 1 相同的元素，但它们分为两个数组组（使用组很重要，因为字符串限制为 4096 个字符）。虽然 SET 1 正确绘制了所有线条，但 SET 2 却错误地为所有符号绘制了相同的线条。当观察 SPY 时，这一点尤其明显。不清楚为什么会出现这种情况，因为代码看起来是正确的。有错误吗？

设置 1 用于间谍

间谍套装 2

2 组使用了以下阵列：

//SET 1

// array.push(a_str_set_ticker, "TSLA,TSLA,TSLA,SPY,SPY,SPY,SPY,AAPL,AAPL,AAPL")
// array.push(a_str_set_x1, "2,2,2,2,2,2,2,2,2,2")
// array.push(a_str_set_x2, "1,1,1,1,1,1,1,1,1,1")
// array.push(a_str_set_y1, "872.94,874.37,643.0,392.01,391.88,378.81,374.8,130.65,131.07,120.1")
// array.push(a_str_set_y2, "872.47,873.18,659.51,391.8,391.52,378.23,375.16,129.89,130.36,121.2")

//SET 2

array.push(a_str_set_ticker, "TSLA,TSLA,TSLA,SPY")
array.push(a_str_set_x1, "2,2,2,2")
array.push(a_str_set_x2, "1,1,1,1")
array.push(a_str_set_y1, "872.94,874.37,643.0,392.01")
array.push(a_str_set_y2, "872.47,873.18,659.51,391.8")

array.push(a_str_set_ticker, "SPY,SPY,SPY,AAPL,AAPL,AAPL")
array.push(a_str_set_x1, "2,2,2,2,2,2")
array.push(a_str_set_x2, "1,1,1,1,1,1")
array.push(a_str_set_y1, "391.88,378.81,374.8,130.65,131.07,120.1")
array.push(a_str_set_y2, "391.52,378.23,375.16,129.89,130.36,121.2")

Edit 2

Bjorn 的修订解决方案适用于数组组，但是当对许多元素使用此方法时，Pine 脚本现在会产生错误“循环执行时间太长 (> 200ms)" 下面是 1316 个坐标组的理论示例。原始代码允许 4000 多个坐标，并且在修复之前它可以工作更多。有没有办法解决这个问题？

array.push(a_str_set_ticker, "SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY")
array.push(a_str_set_x1, "2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2")
array.push(a_str_set_x2, "1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1")
array.push(a_str_set_y1, "360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360")
array.push(a_str_set_y2, "400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400")

array.push(a_str_set_ticker, "SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY,SPY")
array.push(a_str_set_x1, "2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2")
array.push(a_str_set_x2, "1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1")
array.push(a_str_set_y1, "360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360,360")
array.push(a_str_set_y2, "400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400,400")

解决方案如下。
我能够删除我的f_str2float() and f_str2int()函数，因为昨天他们发布了一个新的内置函数tonumber() https://www.tradingview.com/pine-script-reference/#fun_tonumber.
脚本现在看起来更干净了。

//@version=4
study("Lines", "LI", true)

int             i_max_lines         = input(10,    "Max number of lines drawn", minval=1, maxval=20)
bool            i_extend_lines      = input(false, "Extend lines")

var string[]    a_ticker            = array.new_string()
var int[]       a_x1                = array.new_int()
var int[]       a_x2                = array.new_int()
var float[]     a_y1                = array.new_float()
var float[]     a_y2                = array.new_float()
var string[]    a_str               = array.new_string()

var string[]    a_str_set_ticker    = array.new_string()
var string[]    a_str_set_x1        = array.new_string()
var string[]    a_str_set_x2        = array.new_string()
var string[]    a_str_set_y1        = array.new_string()
var string[]    a_str_set_y2        = array.new_string()

var line[]      a_lines             = array.new_line()

// Initialize the data
f_init_data() =>
    // 4000 tickers, broken down into 5 sets, because a string has a max size of 4096 characters.
    // 800 tickers, set 1
    array.push(a_str_set_ticker, "QQQ,QQQ,QQQ,AMZN,AMZN")
    array.push(a_str_set_x1, "20,30,40,20,30")
    array.push(a_str_set_x2, "2,3,4,2,3")
    array.push(a_str_set_y1, "267,300,222,3000,2000")
    array.push(a_str_set_y2, "338.2,200,111,2500,1000")

// Initialize the lines
f_init_lines() =>
    for x = 0 to i_max_lines-1
        array.push(a_lines, line.new(na, na, na, na, extend=i_extend_lines ? extend.both : extend.none))

// Draw lines
f_draw_lines() =>
    if array.includes(a_ticker, syminfo.ticker)
        var int[]   subarray_x1 = array.new_int()
        var int[]   subarray_x2 = array.new_int()
        var float[] subarray_y1 = array.new_float()
        var float[] subarray_y2 = array.new_float()
        var int     x1          = na
        var int     x2          = na
        var float   y1          = na
        var float   y2          = na

        // Get elements with current ticker and put in a subarray.
        for x = array.indexof(a_ticker, syminfo.ticker) to array.lastindexof(a_ticker, syminfo.ticker)
            if array.get(a_ticker, x) == syminfo.ticker
                array.push(subarray_x1, array.get(a_x1, x))
                array.push(subarray_x2, array.get(a_x2, x))
                array.push(subarray_y1, array.get(a_y1, x))
                array.push(subarray_y2, array.get(a_y2, x))

        // Draw all lines in the subarray.
        for x = 0 to min(array.size(subarray_x1),i_max_lines)-1
            x1 := array.get(subarray_x1, x)
            x2 := array.get(subarray_x2, x)
            y1 := array.get(subarray_y1, x)
            y2 := array.get(subarray_y2, x)
            line.set_xy1(array.get(a_lines, x), bar_index - x1, y1)
            line.set_xy2(array.get(a_lines, x), bar_index - x2, y2)     


if barstate.islast
    // Initialization
    f_init_data()
    f_init_lines()

    // Process the data
    for z = 0 to array.size(a_str_set_ticker)-1
        a_ticker := array.concat(str.split(array.get(a_str_set_ticker, z),","), a_ticker)
    
        a_str := str.split(array.get(a_str_set_x1, z),",")
        for i = 0 to array.size(a_str)-1
            array.push(a_x1,int(tonumber(array.get(a_str,i))))
    
        a_str := str.split(array.get(a_str_set_x2, z),",")
        for i = 0 to array.size(a_str)-1
            array.push(a_x2,int(tonumber(array.get(a_str,i))))
    
        a_str := str.split(array.get(a_str_set_y1, z),",")
        for i = 0 to array.size(a_str)-1
            array.push(a_y1,tonumber(array.get(a_str,i)))
    
        a_str := str.split(array.get(a_str_set_y2, z),",")
        for i = 0 to array.size(a_str)-1
            array.push(a_y2,tonumber(array.get(a_str,i)))
            
    // Draw lines
    f_draw_lines()

Edit 1
作为回应这条评论 https://stackoverflow.com/questions/66431481/using-multiple-array-elements-to-produce-multiple-lines-for-the-same-symbols-pi/66435062?noredirect=1#comment117524342_66435062.
似乎有问题array.concat()函数，它反转了股票序列。我通过与处理代码相同的方式解决了这个问题x/y values.
还添加了一个debug输入中的复选框，以显示数组的内容。

//@version=4
study("Lines", "LI", true)

int             i_max_lines         = input(10,    "Max number of lines drawn", minval=1, maxval=20)
bool            i_extend_lines      = input(false, "Extend lines")
bool            i_debug             = input(false, "Show debug info")

var string[]    a_ticker            = array.new_string()
var int[]       a_x1                = array.new_int()
var int[]       a_x2                = array.new_int()
var float[]     a_y1                = array.new_float()
var float[]     a_y2                = array.new_float()

var string[]    a_str_set_ticker    = array.new_string()
var string[]    a_str_set_x1        = array.new_string()
var string[]    a_str_set_x2        = array.new_string()
var string[]    a_str_set_y1        = array.new_string()
var string[]    a_str_set_y2        = array.new_string()

var line[]      a_lines             = array.new_line()

// Initialize the data
f_init_data() =>

    //SET 1
    // array.push(a_str_set_ticker, "TSLA,TSLA,TSLA,SPY,SPY,SPY,SPY,AAPL,AAPL,AAPL")
    // array.push(a_str_set_x1, "2,2,2,2,2,2,2,2,2,2")
    // array.push(a_str_set_x2, "1,1,1,1,1,1,1,1,1,1")
    // array.push(a_str_set_y1, "872.94,874.37,643.0,392.01,391.88,378.81,374.8,130.65,131.07,120.1")
    // array.push(a_str_set_y2, "872.47,873.18,659.51,391.8,391.52,378.23,375.16,129.89,130.36,121.2")
    
    //SET 2
    array.push(a_str_set_ticker, "TSLA,TSLA,TSLA,SPY")
    array.push(a_str_set_x1, "2,2,2,2")
    array.push(a_str_set_x2, "1,1,1,1")
    array.push(a_str_set_y1, "872.94,874.37,643.0,392.01")
    array.push(a_str_set_y2, "872.47,873.18,659.51,391.8")
    
    array.push(a_str_set_ticker, "SPY,SPY,SPY,AAPL,AAPL,AAPL")
    array.push(a_str_set_x1, "2,2,2,2,2,2")
    array.push(a_str_set_x2, "1,1,1,1,1,1")
    array.push(a_str_set_y1, "391.88,378.81,374.8,130.65,131.07,120.1")
    array.push(a_str_set_y2, "391.52,378.23,375.16,129.89,130.36,121.2")


// Initialize the lines
f_init_lines() =>
    for x = 0 to i_max_lines-1
        array.push(a_lines, line.new(na, na, na, na, extend=i_extend_lines ? extend.both : extend.none))

// Draw lines
f_draw_lines() =>
    if array.includes(a_ticker, syminfo.ticker)
        var int[]   subarray_x1 = array.new_int()
        var int[]   subarray_x2 = array.new_int()
        var float[] subarray_y1 = array.new_float()
        var float[] subarray_y2 = array.new_float()
        var int     x1          = na
        var int     x2          = na
        var float   y1          = na
        var float   y2          = na

        // Get elements with current ticker and put in a subarray.
        for x = array.indexof(a_ticker, syminfo.ticker) to array.lastindexof(a_ticker, syminfo.ticker)
            if array.get(a_ticker, x) == syminfo.ticker
                array.push(subarray_x1, array.get(a_x1, x))
                array.push(subarray_x2, array.get(a_x2, x))
                array.push(subarray_y1, array.get(a_y1, x))
                array.push(subarray_y2, array.get(a_y2, x))

        // Draw all lines in the subarray.
        for x = 0 to min(array.size(subarray_x1),i_max_lines)-1
            x1 := array.get(subarray_x1, x)
            x2 := array.get(subarray_x2, x)
            y1 := array.get(subarray_y1, x)
            y2 := array.get(subarray_y2, x)
            line.set_xy1(array.get(a_lines, x), bar_index - x1, y1)
            line.set_xy2(array.get(a_lines, x), bar_index - x2, y2)     

// Process the data
f_process_data() =>
    for z = 0 to array.size(a_str_set_ticker)-1
        for i = 0 to array.size(str.split(array.get(a_str_set_ticker, z),","))-1
            array.push(a_ticker,              array.get(str.split(array.get(a_str_set_ticker, z),","),i)    )
            array.push(a_x1,     int(tonumber(array.get(str.split(array.get(a_str_set_x1,     z),","),i)))  )
            array.push(a_x2,     int(tonumber(array.get(str.split(array.get(a_str_set_x2,     z),","),i)))  )
            array.push(a_y1,         tonumber(array.get(str.split(array.get(a_str_set_y1,     z),","),i))   )
            array.push(a_y2,         tonumber(array.get(str.split(array.get(a_str_set_y2,     z),","),i))   )

// Debug info
f_debug(_show) =>
    if _show
        label_text = "a_ticker=" + tostring(a_ticker) + "\n" + "a_x1=" + tostring(a_x1) + "\n" + "a_x2=" + tostring(a_x2) + "\n" + "a_y1=" + tostring(a_y1) + "\n" + "a_y2=" + tostring(a_y2)
        label.new(bar_index, high, label_text) 


if barstate.islast
    // Initialization
    f_init_data()
    f_init_lines()

    // Process the data
    f_process_data()
    
    // Draw lines
    f_draw_lines()

    // Show debug info
    f_debug(i_debug)

Edit 2
作为回应这条评论 https://stackoverflow.com/questions/66431481/using-multiple-array-elements-to-produce-multiple-lines-for-the-same-symbols-pi/66435062?noredirect=1#comment117528070_66435062.
循环变小以避免Loop takes too long to execute error.
请更新f_process_data()函数如下。

// Process the data
f_process_data() =>
    var string[]    a_str = array.new_string()
    
    for z = 0 to array.size(a_str_set_ticker)-1
        a_size  = array.size(str.split(array.get(a_str_set_ticker, z),","))
        
        a_str := str.split(array.get(a_str_set_ticker, z),",")
        for i = 0 to a_size-1
            array.push(a_ticker,              array.get(a_str,i)    )

        a_str := str.split(array.get(a_str_set_x1, z),",")
        for i = 0 to a_size-1
            array.push(a_x1,     int(tonumber(array.get(a_str,i)))  )

        a_str := str.split(array.get(a_str_set_x2, z),",")
        for i = 0 to a_size-1
            array.push(a_x2,     int(tonumber(array.get(a_str,i)))  )

        a_str := str.split(array.get(a_str_set_y1, z),",")
        for i = 0 to a_size-1
            array.push(a_y1,         tonumber(array.get(a_str,i))   )

        a_str := str.split(array.get(a_str_set_y2, z),",")
        for i = 0 to a_size-1
            array.push(a_y2,         tonumber(array.get(a_str,i))   )

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使用多个数组元素为相同符号生成多行（Pine 脚本）

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