NSDT HAMA Candles with Bollinger…: Free TradingView Indicator (Pine Script)

Add It to Your TradingView Chart

1Copy the scriptPress Copy script above, or the copy button on the code below.
2Open the Pine EditorOpen a TradingView chart and choose Pine Editor at the bottom of the screen.
3Paste over the templateCreate a new indicator, select all of the template text and paste. Press Save and give it a name.
4Add it to the chartPress Add to chart, then adjust the settings with the gear icon next to its name.

Source Code

218 lines of Pine Script v5 from trash/archive_test_files/hamaCandel.txt, published under Apache-2.0. Keep the author's credit and licence lines when you reuse it.

hamaCandel.txt

//@version=5
indicator("NSDT HAMA Candles with Bollinger Bands", overlay=true)

// ===== 布林带部分 =====
// 输入参数
bb_length = input(400, "布林带周期")
bb_mult = input(2.0, "布林带标准差倍数")

// 计算布林带
basis = ta.sma(close, bb_length)
dev = ta.stdev(close, bb_length)
upper = basis + dev * bb_mult
lower = basis - dev * bb_mult

// 绘制布林带
p1 = plot(upper, "上轨", color=color.orange)
p2 = plot(basis, "中轨", color=color.purple)
p3 = plot(lower, "下轨", color=color.red)
fill(p1, p3, color=color.new(color.white, 95), title="布林带区域")

// ===== HAMA蜡烛图部分 =====
// 渐变颜色系统
f_c_gradientAdvDecPro(_source, _center, _steps, _c_bearWeak, _c_bearStrong, _c_bullWeak, _c_bullStrong) =>
    var float _qtyAdvDec = 0.
    var float _maxSteps  = math.max(1, _steps)
    bool  _xUp     = ta.crossover(_source, _center)
    bool  _xDn     = ta.crossunder(_source, _center)
    float _chg     = ta.change(_source)
    bool  _up      = _chg > 0
    bool  _dn      = _chg < 0
    bool  _srcBull = _source > _center
    bool  _srcBear = _source < _center
    _qtyAdvDec := 
      _srcBull ? _xUp ? 1 : _up ? math.min(_maxSteps, _qtyAdvDec + 1) : _dn ? math.max(1, _qtyAdvDec - 1) : _qtyAdvDec :
      _srcBear ? _xDn ? 1 : _dn ? math.min(_maxSteps, _qtyAdvDec + 1) : _up ? math.max(1, _qtyAdvDec - 1) : _qtyAdvDec : _qtyAdvDec
    var color _return = na
    _return := 
      _srcBull ? color.from_gradient(_qtyAdvDec, 1, _maxSteps, _c_bullWeak, _c_bullStrong) : 
      _srcBear ? color.from_gradient(_qtyAdvDec, 1, _maxSteps, _c_bearWeak, _c_bearStrong) : _return

// MA计算函数
mat(source, length, type) =>
    switch type
        "SMA" => ta.sma(source, length)
        "EMA" => ta.ema(source, length)
        "RMA" => ta.rma(source, length)
        "WMA" => ta.wma(source, length)
        "HMA" => ta.hma(source, length)
        => na

// HAMA输入参数
bull = input(color.rgb(0, 255, 0), "Bull Color")
bear = input(color.rgb(255, 0, 0), "Bear Color")
neutral = input(color.rgb(255, 255, 0, 0), "Neutral Color")
show_ma = input(true, "显示MA线")
ma_type = input.string("WMA", "MA类型", options=["EMA", "SMA", "WMA"])
ma_source = input(close, "MA源数据")
ma_length = input(100, "MA长度")
UseGradient = input(true, "使用渐变颜色")
stepn = input(5, "最大渐变步数")

// 计算HAMA MA
ma = mat(ma_source, ma_length, ma_type)
col = f_c_gradientAdvDecPro(ma, ta.ema(ma, 3), stepn, neutral, bear, neutral, bull)

// HAMA蜡烛图参数
WickColor = input(color.rgb(80, 80, 80, 100), "Wick Color")
OpenLength = input(45, "开盘价长度")
OpenType = input.string('EMA', '开盘价类型', options=['EMA', 'SMA', 'WMA'])
HighLength = input(20, "最高价长度")
HighType = input.string("EMA", "最高价类型", options=['EMA', 'SMA', 'WMA'])
LowLength = input(20, "最低价长度")
LowType = input.string("EMA", "最低价类型", options=['EMA', 'SMA', 'WMA'])
CloseLength = input(40, "收盘价长度")
CloseType = input.string('WMA', '收盘价类型', options=['EMA', 'SMA', 'WMA'])

// HAMA蜡烛图计算函数
funcCalcOpen(TypeOpen, SourceOpen, LengthOpen) =>
    switch TypeOpen
        'EMA' => ta.ema(SourceOpen, LengthOpen)
        'SMA' => ta.sma(SourceOpen, LengthOpen)
        'WMA' => ta.wma(SourceOpen, LengthOpen)
        => na

funcCalcHigh(TypeHigh, SourceHigh, LengthHigh) =>
    switch TypeHigh
        'EMA' => ta.ema(SourceHigh, LengthHigh)
        'SMA' => ta.sma(SourceHigh, LengthHigh)
        'WMA' => ta.wma(SourceHigh, LengthHigh)
        => na

funcCalcLow(TypeLow, SourceLow, LengthLow) =>
    switch TypeLow
        'EMA' => ta.ema(SourceLow, LengthLow)
        'SMA' => ta.sma(SourceLow, LengthLow)
        'WMA' => ta.wma(SourceLow, LengthLow)
        => na

funcCalcClose(TypeClose, SourceClose, LengthClose) =>
    switch TypeClose
        'EMA' => ta.ema(SourceClose, LengthClose)
        'SMA' => ta.sma(SourceClose, LengthClose)
        'WMA' => ta.wma(SourceClose, LengthClose)
        => na

// 计算HAMA蜡烛图
SourceOpen = (open[1] + close[1]) / 2
SourceHigh = math.max(high, close)
SourceLow = math.min(low, close)
SourceClose = (open + high + low + close) / 4

CandleOpen = funcCalcOpen(OpenType, SourceOpen, OpenLength)
CandleHigh = funcCalcHigh(HighType, SourceHigh, HighLength)
CandleLow = funcCalcLow(LowType, SourceLow, LowLength)
CandleClose = funcCalcClose(CloseType, SourceClose, CloseLength)

// 绘制HAMA蜡烛图
BodyColor = CandleOpen > CandleOpen[1] ? color.green : color.red
plotcandle(CandleOpen, CandleHigh, CandleLow, CandleClose, 
           color=UseGradient ? col : BodyColor, 
           title="HAMA Candles", 
           wickcolor=WickColor, 
           bordercolor=na)

// ===== 新增：HAMA蜡烛图与MA线交叉信号 =====
// 计算HAMA蜡烛图与MA线的交叉
hama_cross_up = ta.crossover(CandleClose, ma)  // HAMA蜡烛图上穿MA线
hama_cross_down = ta.crossunder(CandleClose, ma)  // HAMA蜡烛图下穿MA线

// 显示"涨"字信号（当HAMA蜡烛图上穿MA线时）
// 显示"涨"字信号（HAMA蜡烛图上穿MA线时）
if (hama_cross_up)
    label.new(bar_index, ma, "涨",  // 使用MA线的位置作为标签位置
              color=color.green, 
              textcolor=color.white, 
              style=label.style_label_down, 
              yloc=yloc.price)

// 显示"跌"字信号（HAMA蜡烛图下穿MA线时）
if (hama_cross_down)
    label.new(bar_index, ma, "跌",  // 使用MA线的位置作为标签位置
              color=color.red, 
              textcolor=color.white, 
              style=label.style_label_up, 
              yloc=yloc.price)
// plotshape(hama_cross_down, title="跌信号", text="跌", style=shape.labelup, 
//           location=location.belowbar, color=color.red)
// 绘制HAMA MA线 - 使用条件显示而不是条件plot
ma_color = UseGradient ? col : BodyColor
plot(show_ma ? ma : na, title="HAMA MA Line", color=ma_color, linewidth=2)

// ===== 交易信号和警报 =====
// 布林带交易信号
bb_width = (upper - lower) / basis
bb_squeeze = bb_width < 0.1  // 布林带收缩
bb_expansion = bb_width > 0.15  // 布林带扩张

// 价格位置相对于布林带
price_position = (close - lower) / (upper - lower)

// 警报条件 - 新增HAMA交叉警报
alertcondition(hama_cross_up, "HAMA蜡烛图上穿MA线", "HAMA蜡烛图上穿MA线，显示涨信号")
alertcondition(hama_cross_down, "HAMA蜡烛图下穿MA线", "HAMA蜡烛图下穿MA线，显示跌信号")
alertcondition(ta.crossover(close, upper), "价格突破上轨", "布林带上轨突破")
alertcondition(ta.crossunder(close, lower), "价格跌破下轨", "布林带下轨突破")
alertcondition(bb_squeeze, "布林带收缩", "布林带收缩，可能即将突破")
alertcondition(ta.rising(ma, 2), "HAMA MA上升", "HAMA MA开始上升")
alertcondition(ta.falling(ma, 2), "HAMA MA下降", "HAMA MA开始下降")

// ===== 改进的HAMA状态判断 =====
// 记录最近一次交叉方向
var int last_cross_direction = 0  // 0:无, 1:上穿, -1:下穿

if hama_cross_up
    last_cross_direction := 1
else if hama_cross_down
    last_cross_direction := -1

// 判断当前是否维持趋势
maintain_bullish = last_cross_direction == 1 and CandleClose >= ma
maintain_bearish = last_cross_direction == -1 and CandleClose <= ma

// 可选：添加确认条件（比如价格偏离MA一定幅度）
deviation_pct = math.abs(CandleClose - ma) / ma * 100
min_deviation = 0.1  // 最小偏离0.1%

maintain_bullish := maintain_bullish and deviation_pct >= min_deviation
maintain_bearish := maintain_bearish and deviation_pct >= min_deviation

// ===== 信息显示 - 添加HAMA交叉信息 =====
var table info_table = table.new(position.middle_right, 2, 8, bgcolor=color.white, border_width=1)
if barstate.islast
    table.cell(info_table, 0, 0, "布林带宽度", text_color=color.black)
    table.cell(info_table, 1, 0, str.tostring(bb_width, "#.#####"), text_color=color.black)
    table.cell(info_table, 0, 1, "价格位置", text_color=color.black)
    table.cell(info_table, 1, 1, str.tostring(price_position, "#.##%"), text_color=color.black)
    table.cell(info_table, 0, 2, "上轨", text_color=color.black)
    table.cell(info_table, 1, 2, str.tostring(upper, "#.##"), text_color=color.black)
    table.cell(info_table, 0, 3, "中轨", text_color=color.black)
    table.cell(info_table, 1, 3, str.tostring(basis, "#.##"), text_color=color.black)
    table.cell(info_table, 0, 4, "下轨", text_color=color.black)
    table.cell(info_table, 1, 4, str.tostring(lower, "#.##"), text_color=color.black)
    // 新增HAMA相关信息
    table.cell(info_table, 0, 5, "HAMA状态", text_color=color.black)
    hama_status = maintain_bullish ? "上涨趋势" : maintain_bearish ? "下跌趋势" : "盘整"
    hama_status_color = maintain_bullish ? color.green : maintain_bearish ? color.red : color.gray
    table.cell(info_table, 1, 5, hama_status, text_color=hama_status_color)
    // table.cell(info_table, 0, 5, "HAMA状态", text_color=color.black)
    // hama_status = hama_cross_up ? "上涨信号" : hama_cross_down ? "下跌信号" : "盘整"
    // hama_status_color = hama_cross_up ? color.green : hama_cross_down ? color.red : color.gray
    // table.cell(info_table, 1, 5, hama_status, text_color=hama_status_color)
    table.cell(info_table, 0, 6, "蜡烛/MA", text_color=color.black)
    candle_ma_relation = CandleClose > ma ? "蜡烛在MA上" : CandleClose < ma ? "蜡烛在MA下" : "重合"
    table.cell(info_table, 1, 6, candle_ma_relation, text_color=color.black)
    table.cell(info_table, 0, 7, "状态", text_color=color.black)
    status_text = bb_squeeze ? "收缩" : bb_expansion ? "扩张" : "正常"
    status_color = bb_squeeze ? color.orange : bb_expansion ? color.green : color.gray
    table.cell(info_table, 1, 7, status_text, text_color=status_color)

Overview

NSDT HAMA Candles with Bollinger Bands builds each candle from separate moving averages of open, high, low and close, using selectable EMA, SMA or WMA lengths. A simple moving average forms the band basis, and an optional moving average is colored by a gradient as it rises or falls against a short exponential average. Lengths, multipliers, colors and gradient steps are adjustable. It does not generate trade entries, exits or stop levels.

Bollinger Bands with adjustable length and multiplier
Smoothed HAMA open, high, low and close
Optional moving-average line
Gradient bull and bear coloring
Selectable EMA, SMA and WMA types

Details

Published by

alexbibihere on GitHub

Type

Indicator, Pine Script v5

Draws

On the price chart

Markets

Any symbol

Timeframes

Any timeframe

Risk Notes

No repainting, lookahead or stacked entries were found in its code or README. That says nothing about how well it works: test it first.

File

trash/archive_test_files/hamaCandel.txt

Repository

github.com/alexbibihere/QuantDinger. See its other scripts in the library

Settings

The inputs you can change from the gear icon on the chart. Defaults are the author's.

Setting	Type	Default	Variable
布林带周期	`int`	`400`	`bb_length`
布林带标准差倍数	`float`	`2.0`	`bb_mult`
Bull Color	`color`	`color.rgb(0, 255, 0)`	`bull`
Bear Color	`color`	`color.rgb(255, 0, 0)`	`bear`
Neutral Color	`color`	`color.rgb(255, 255, 0, 0)`	`neutral`
显示MA线	`bool`	`true`	`show_ma`
MA类型	`string`	`WMA`	`ma_type`
MA源数据	`source`	`close`	`ma_source`
MA长度	`int`	`100`	`ma_length`
使用渐变颜色	`bool`	`true`	`UseGradient`
最大渐变步数	`int`	`5`	`stepn`
Wick Color	`color`	`color.rgb(80, 80, 80, 100)`	`WickColor`

Show all 20 settings

Setting	Type	Default	Variable
开盘价长度	`int`	`45`	`OpenLength`
开盘价类型	`string`	`EMA`	`OpenType`
最高价长度	`int`	`20`	`HighLength`
最高价类型	`string`	`EMA`	`HighType`
最低价长度	`int`	`20`	`LowLength`
最低价类型	`string`	`EMA`	`LowType`
收盘价长度	`int`	`40`	`CloseLength`
收盘价类型	`string`	`WMA`	`CloseType`

Third-party code. ForexR did not write, test or endorse this script, and the summary above was generated automatically from its code and README. Indicators describe the past, and a strategy's backtest can look better than live trading, especially when a script repaints. Check it in the Strategy Tester and on a demo account before you rely on it.

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