TradingView指标转策略后无显示问题求助

我尝试将一款TradingView指标转换为策略使用：该指标作为指标时可正常在图表显示，但将声明中的indicator改为strategy后，虽能无错误保存，却无法再显示；将指标代码加入默认策略模板（保留strategy声明、移除indicator）后，同样无错误保存但无任何显示。

原指标代码 #

//@version=5

indicator("Test10_v1",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


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

if barstate.isfirst and not disclaimer
    table.cell(tb, 0, 0, 'Repaints'
      , text_size = size.small
      , text_color = #cc2f3c)

问题原因 #

1. 策略默认不叠加主图：原指标用overlay=true让绘图显示在主图，但strategy声明默认overlay=false，会把策略内容放到副图，导致主图看不到线条和标签。
2. 绘图资源参数未迁移：原指标设置的max_lines_count、max_labels_count等资源限制参数，需要同步到strategy声明中，否则策略无法创建足够的绘图元素。

修改后的策略代码 #

//@version=5
// 核心修改：替换为strategy声明，保留overlay=true并迁移资源限制参数
strategy("Test10_v1_Strategy", 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

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

if barstate.isfirst and not disclaimer
    table.cell(tb, 0, 0, 'Repaints'
      , text_size = size.small
      , text_color = #cc2f3c)

修改说明 #

• 将indicator声明替换为strategy，并保留overlay=true确保绘图显示在主图。
• 把原指标的max_bars_back、max_lines_count、max_labels_count参数迁移到strategy声明中，保证策略有足够资源创建绘图元素。
• 其余逻辑完全保留原指标的行为，确保绘图效果和原指标一致。

内容的提问来源于stack exchange，提问作者george10001000