Plot 需要绘制所有相关蜡烛的支撑和阻力，但仅在交叉点绘制

我想在所有蜡烛上画一个支撑点，当价格越过前一季度高点和前一个月高点，然后穿过前一周的低点时，收盘成为支撑点。 只要价格保持低于前一周的高位，每一次收盘都将成为支撑。只要价格不低于上季度低点或上个月低点，这种情况就会保持，然后支撑也会停止。它现在只在交叉点绘制

对于阻力来说，情况正好相反。

/@version=3
//陪审团
//-------------------------------
//支持
//如果价格越过上季度最高点和上个月最高点，然后又越过上周最低点，那么收盘价将成为支撑。
//只要价格保持在前一周的高点以下，每次收盘都会成为支撑。只要价格不交叉，这种情况就不会改变
//低于上季度低点或上个月低点，则支撑也停止。
//-------------------------------
//抵抗力
//如果价格在上季度低点和上个月低点下方交叉，然后在上周高点上方交叉，收盘价将成为阻力。
//只要价格保持在前一周低点之上，每次收盘都会成为支撑。只要价格不交叉，这种情况就不会改变
//高于前一季度高点或前一个月高点，则阻力也停止。
研究（title=“通用支撑与阻力”，shorttitle=“大学支撑与恢复”，叠加=真实，精度=8）
prevwkH=输入（true，title=“显示上周高点？”）
prevwkL=输入（true，title=“显示上周低点？”）
//前一周
prevWeekHigh=安全性（tickerid，'W'，high[1]，lookahead=true）
prevWeekLow=security（tickerid，'W'，low[1]，lookahead=true）
//上周的情节
绘图（prevwkH和prevWeekHigh？prevWeekHigh:na，title=“Prev Week High”，style=stepline，linewidth=1，color=green，transp=20）
绘图（prevwkL和prevWeekLow？prevWeekLow:na，title=“Prev Week Low”，style=stepline，linewidth=1，color=green，transp=20）
//警报
买入=收盘>周末高
卖出=收盘<前一周
Buyposmemo=false
买吗？真的：卖吗？false:Buyposmemo[1]
Buynow=买而不买（Buyposmemo[1]）
bgcolor（Buynow？颜色（绿色，90）：na）
Sellposmemo=false
Sellposmemo:=卖出？真的：买吗？错误：Sellposmemo[1]
Sellnow=卖出且不卖出（Sellposmemo[1]）
bgcolor（Sellnow？颜色（红色，90）：na）
alertcondition（购买，title=“立即购买”，message=“立即购买”）
alertcondition（出售，title=“立即出售”，message=“立即出售”）
//-------------------------------------------------------------
//通用趋势线
prevQuarterHigh=安全性（tickerid，'3M'，high[1]，lookahead=true）
prevQuarterLow=安全性（tickerid，'3M'，low[1]，lookahead=true）
上升趋势=错误
上升趋势：=（非上升趋势[1]和交叉（收盘，前四分之一高））或（上升趋势[1]和非交叉（收盘，前四分之一低））
//-------------------------------------------------------------
//阴谋支持与抵抗
绘图（向上和向下交叉（关闭，前一周低）？低-（高-低+1）：na，样式=圆形，颜色=绿色，传输=0，线宽=4）
绘图（非上升趋势和交叉（闭合，前一周高）？高+（高-低+1）：na，样式=圆圈，颜色=红色，传输=0，线宽=4）

每当我遇到问题时，我总是用

研究（overlay=false）

克隆我的代码，并绘制一些我怀疑导致问题的信号

因此，在您的情况下，您可以将代码复制并粘贴到新的指示符，并在末尾添加以下行。请删除所有其他

plot（）

函数。否则，将出现缩放问题，结果将不那么明显

//plot support & resistance 
plot(series=upTrend ? 1:0, color=color.orange)
plot(series=crossunder(close, prevWeekLow) ? 1:0, color=color.green)
plot(series=crossover(close, prevWeekHigh) ? 1:0, color=color.red)

结果是：

如果仔细观察，这里的问题是

crossover（）

和

crossunder（）

函数仅在发生交叉/交叉时返回

BOOL

值。因此，plot函数中的条件仅在一个条上变为

TRUE

您需要做的是找出如何保持交叉/交叉的信号

TRUE

，直到遇到相反的信号

为此，我建议您开始使用

v4

。然后可以使用

var

关键字。使用

var

关键字创建的变量保留其值，直到您覆盖它们。因此，您可以执行以下操作：

var isSupport = false
var isResistance = false 

if (crossunder(close, prevWeekLow))
    isSupport := true
    isResistance := false

if (crossover(close, prevWeekHigh))
    isSupport := false
    isResistance := true

以下是使用

v4

的完整代码：

//@version=4
//By Juros
//-------------------------------
// support
// If the price crosses above the previous quarter high and previous month high, and then crosses down the previous week low, the close becomes a support. 
//As long as the price stays then below the previous week high, each close becomes a support. The    condition remains as long as the prices do not cross 
//below previous quarter low OR previous month low, then support also stops.

//-------------------------------
// resistance
// If the price crosses below the previous quarter low and previous month low, and then crosses up the previous week high, the close becomes a resistance.
// As long as the price stays then above the previous week low, each close becomes a support.  The condition remains as long as the price does not cross
// above previous quarter high OR previous month high, then resistance also stops.


study(title="Universal support and resistance", shorttitle="Univ sup & res", overlay=true, precision=8)
prevwkH = input(true, title="Show previous week high?")
prevwkL = input(true, title="show previous week low?")

//previous week
prevWeekHigh = security(syminfo.tickerid, 'W', high[1], lookahead=true)
prevWeekLow = security(syminfo.tickerid, 'W', low[1], lookahead=true)

//previous Week Plots
plot(prevwkH and prevWeekHigh ? prevWeekHigh : na, title="Prev Week High", style=plot.style_stepline,   linewidth=1, color=color.green,transp=20)
plot(prevwkL and prevWeekLow ? prevWeekLow : na, title="Prev Week Low", style=plot.style_stepline, linewidth=1, color=color.green,transp=20)

// alerts
Buy = close > prevWeekHigh
Sell = close < prevWeekLow

Buyposmemo = false
Buyposmemo := Buy ? true : Sell ? false : Buyposmemo[1]
Buynow = Buy and not (Buyposmemo[1])
bgcolor(Buynow ?  color(color.green) :na)

Sellposmemo = false
Sellposmemo := Sell ? true : Buy ? false : Sellposmemo[1]
Sellnow = Sell and not (Sellposmemo[1])
bgcolor(Sellnow ?  color(color.red) :na)

alertcondition(Buy, title = "Buy now", message="buy now")
alertcondition(Sell, title = "Sell now", message="Sell now")

//-------------------------------------------------------------

//universal trend line
prevQuarterHigh = security(syminfo.tickerid, '3M', high[1], lookahead=true)
prevQuarterLow = security(syminfo.tickerid, '3M', low[1], lookahead=true)

upTrend = false
upTrend := (not upTrend[1] and crossover(close, prevQuarterHigh)) or (upTrend[1] and not    crossunder(close, prevQuarterLow))

//-------------------------------------------------------------
var isSupport = false
var isResistance = false 

if (crossunder(close, prevWeekLow))
    isSupport := true
    isResistance := false

if (crossover(close, prevWeekHigh))
    isSupport := false
    isResistance := true

//plot support & resistance 
plot (upTrend and isSupport ? low-(high-low+1) : na, style=plot.style_circles, color=color.green, transp=0, linewidth=4 )
plot (not upTrend and isResistance ? high+(high-low+1) : na, style=plot.style_circles, color=color.red, transp=0, linewidth=4 )

/@version=4
//陪审团
//-------------------------------
//支持
//如果价格越过上季度最高点和上个月最高点，然后又越过上周最低点，那么收盘价将成为支撑。
//只要价格保持在前一周的高点以下，每次收盘都会成为支撑。只要价格不交叉，这种情况就不会改变
//低于上季度低点或上个月低点，则支撑也停止。
//-------------------------------
//抵抗力
//如果价格在上季度低点和上个月低点下方交叉，然后在上周高点上方交叉，收盘价将成为阻力。
//只要价格保持在前一周低点之上，每次收盘都会成为支撑。只要价格不交叉，这种情况就不会改变
//高于前一季度高点或前一个月高点，则阻力也停止。
研究（title=“通用支撑与阻力”，shorttitle=“大学支撑与恢复”，叠加=真实，精度=8）
prevwkH=输入（true，title=“显示上周高点？”）
prevwkL=输入（true，title=“显示上周低点？”）
//前一周
prevWeekHigh=security（syminfo.tickerid，'W'，high[1]，lookahead=true）
prevWeekLow=security（syminfo.tickerid，'W'，low[1]，lookahead=true）
//上周的情节
绘图（prevwkH和prevWeekHigh？prevWeekHigh:na，title=“Prev Week High”，style=plot.style\u stepline，线宽=1，颜色=color
//@version=4
//By Juros
//-------------------------------
// support
// If the price crosses above the previous quarter high and previous month high, and then crosses down the previous week low, the close becomes a support. 
//As long as the price stays then below the previous week high, each close becomes a support. The    condition remains as long as the prices do not cross 
//below previous quarter low OR previous month low, then support also stops.

//-------------------------------
// resistance
// If the price crosses below the previous quarter low and previous month low, and then crosses up the previous week high, the close becomes a resistance.
// As long as the price stays then above the previous week low, each close becomes a support.  The condition remains as long as the price does not cross
// above previous quarter high OR previous month high, then resistance also stops.


study(title="Universal support and resistance", shorttitle="Univ sup & res", overlay=true, precision=8)
prevwkH = input(true, title="Show previous week high?")
prevwkL = input(true, title="show previous week low?")

//previous week
prevWeekHigh = security(syminfo.tickerid, 'W', high[1], lookahead=true)
prevWeekLow = security(syminfo.tickerid, 'W', low[1], lookahead=true)

//previous Week Plots
plot(prevwkH and prevWeekHigh ? prevWeekHigh : na, title="Prev Week High", style=plot.style_stepline,   linewidth=1, color=color.green,transp=20)
plot(prevwkL and prevWeekLow ? prevWeekLow : na, title="Prev Week Low", style=plot.style_stepline, linewidth=1, color=color.green,transp=20)

// alerts
Buy = close > prevWeekHigh
Sell = close < prevWeekLow

Buyposmemo = false
Buyposmemo := Buy ? true : Sell ? false : Buyposmemo[1]
Buynow = Buy and not (Buyposmemo[1])
bgcolor(Buynow ?  color(color.green) :na)

Sellposmemo = false
Sellposmemo := Sell ? true : Buy ? false : Sellposmemo[1]
Sellnow = Sell and not (Sellposmemo[1])
bgcolor(Sellnow ?  color(color.red) :na)

alertcondition(Buy, title = "Buy now", message="buy now")
alertcondition(Sell, title = "Sell now", message="Sell now")

//-------------------------------------------------------------

//universal trend line
prevQuarterHigh = security(syminfo.tickerid, '3M', high[1], lookahead=true)
prevQuarterLow = security(syminfo.tickerid, '3M', low[1], lookahead=true)

upTrend = false
upTrend := (not upTrend[1] and crossover(close, prevQuarterHigh)) or (upTrend[1] and not    crossunder(close, prevQuarterLow))

//-------------------------------------------------------------
var isSupport = false
var isResistance = false 

if (crossunder(close, prevWeekLow))
    isSupport := true
    isResistance := false

if (crossover(close, prevWeekHigh))
    isSupport := false
    isResistance := true

//plot support & resistance 
plot (upTrend and isSupport ? low-(high-low+1) : na, style=plot.style_circles, color=color.green, transp=0, linewidth=4 )
plot (not upTrend and isResistance ? high+(high-low+1) : na, style=plot.style_circles, color=color.red, transp=0, linewidth=4 )