বর্ধিত ভলিউম এবং মূল্য প্রবণতা বিচার গতির কৌশল

/*backtest
start: 2019-12-23 08:00:00
end: 2025-01-08 08:00:00
period: 1d
basePeriod: 1d
exchanges: [{"eid":"Futures_Binance","currency":"BTC_USDT","balance":49999}]
*/

//@version=5
strategy(title="軒割MACD 空心量能不足策略", shorttitle="軒割MACD 空心量能不足策略", overlay=true)

//=== 1) 參數 ===//
fast_length   = input.int(title="Fast Length",        defval=12)
slow_length   = input.int(title="Slow Length",        defval=26)
src           = input.source(title="MACD Source",     defval=close)
signal_length = input.int(title="Signal Smoothing",   defval=9,  minval=1, maxval=50)
sma_source    = input.string(title="Oscillator MA Type", defval="EMA", options=["SMA","EMA"])
sma_signal    = input.string(title="Signal MA Type",     defval="EMA", options=["SMA","EMA"])

// 啟用多單 / 空單
useLong       = input.bool(title="啟用多單？(底部紅色)", defval=true)
useShort      = input.bool(title="啟用空單？(頂部綠色)", defval=true)

// 止盈倍數 (1~10倍 ATR)
tpATRmult     = input.int(title="止盈 ATR 倍數 (1~10)", defval=10, minval=1, maxval=500)
// 止損倍數 (1~10倍 ATR)
slATRmult     = input.int(title="止損 ATR 倍數 (1~10)", defval=3, minval=1, maxval=500)

//=== 2) MACD 計算 ===//
fast_ma  = sma_source == "SMA" ? ta.sma(src, fast_length) : ta.ema(src, fast_length)
slow_ma  = sma_source == "SMA" ? ta.sma(src, slow_length) : ta.ema(src, slow_length)
macd     = fast_ma - slow_ma
signal   = sma_signal == "SMA" ? ta.sma(macd, signal_length) : ta.ema(macd, signal_length)
hist     = macd - signal

//=== 3) 判斷深色/淺色（用於變化訊號）===//
darkGreen  = hist >= 0 and hist <= hist[1]   // 上方，柱子縮小或持平
lightGreen = hist >= 0 and hist >  hist[1]   // 上方，柱子變大
darkRed    = hist <  0 and hist <= hist[1]   // 下方，柱子(絕對值)變大或持平
lightRed   = hist <  0 and hist >  hist[1]   // 下方，柱子(絕對值)變小

// 由「深 → 淺」是否發生在上一根
colorChangeToLightGreen = darkGreen[1] and lightGreen
colorChangeToLightRed   = darkRed[1]   and lightRed

//=== 4) ATR 計算 (用於止盈止損) ===//
atrPeriod  = 14
atrValue   = ta.atr(atrPeriod)

//=== 5) 多單策略：深紅 → 淺紅 (底部紅色) ===//
if useLong and colorChangeToLightRed
    // 以當前 K 線 low - ATR倍數 作為多單止損
    longStopLoss   = low - (slATRmult * atrValue)
    // 以當前 close + ATR倍數 作為多單止盈
    longTakeProfit = close + (tpATRmult * atrValue)

    // 進多單
    strategy.entry("Long Entry", strategy.long, comment="多", qty=1)
    strategy.exit("平多", "Long Entry", stop=longStopLoss, limit=longTakeProfit)

//=== 6) 空單策略：深綠 → 淺綠 (頂部綠色) ===//
if useShort and colorChangeToLightGreen
    // 以當前 K 線 high + ATR倍數 作為空單止損
    shortStopLoss   = high + (slATRmult * atrValue)
    // 以當前 close - ATR倍數 作為空單止盈
    shortTakeProfit = close - (tpATRmult * atrValue)

    // 進空單
    strategy.entry("Short Entry", strategy.short, comment="空", qty=1)
    strategy.exit("平空", "Short Entry", stop=shortStopLoss, limit=shortTakeProfit)

//=== 7) 繪製 MACD 與直方圖 ===//
hline(0, "Zero Line", color=color.new(#787B86, 50))

// 長條圖顏色：
//   - 上方 (hist >= 0) 時：hist 比前一根大 (淺綠) 或小 (深綠)
//   - 下方 (hist < 0)  時：hist 比前一根大 (淺紅) 或小 (深紅)
plot(hist,title="Histogram",style=plot.style_columns,color = hist >= 0? (hist > hist[1]  ? #26A69A : #B2DFDB)   : (hist > hist[1]  ? #FFCDD2 : #FF5252)  )

// 繪製 MACD 與 Signal
plot(macd,   title="MACD",   color=#2962FF)
plot(signal, title="Signal", color=#FF6D00)