问题描述
我希望 FIRST FALL-ABOVE 蜡烛和 FIRST GROW-BELOW 蜡烛具有突出显示的背景，Fall Above 是石灰，Grow 下面是红色。我怎么才能只在那些第一支蜡烛上获得背景高光？
如何在这些蜡烛上创建警报条件？任何帮助将不胜感激。类似于以下内容，然后是 MACD 代码本身。
//Alert condition and first growth and first shrunk candle marked
peak = bcolor == green and bcolor[1] == lime
trough = bcolor == maroon and bcolor[1] == red
bgcolor(color = peak ? lime : trough ? red : na)
alertcondition(peak,"Peak Top","Top Peak (short)")
alertcondition(trough,"Trough Bottom","Bottom Trough (long)")
//MACD
study(title="MACD",shorttitle="MACD",resolution="")
fast_length = input(title="Fast Length",type=input.integer,defval=12)
slow_length = input(title="Slow Length",defval=26)
src = input(title="Source",type=input.source,defval=close)
signal_length = input(title="Signal Smoothing",minval = 1,maxval = 50,defval = 9)
sma_source = input(title="Simple MA (Oscillator)",type=input.bool,defval=false)
sma_signal = input(title="Simple MA (Signal Line)",defval=false)
// colors
col_grow_above = #26A69A
col_grow_below = #FFCDD2
col_fall_above = #B2DFDB
col_fall_below = #EF5350
col_macd = #0094ff
col_signal = #ff6a00
// Calculation
fast_ma = sma_source ? sma(src,fast_length) : ema(src,fast_length)
slow_ma = sma_source ? sma(src,slow_length) : ema(src,slow_length)
macd = fast_ma - slow_ma
signal = sma_signal ? sma(macd,signal_length) : ema(macd,signal_length)
hist = macd - signal
plot(hist,title="Histogram",style=plot.style_columns,color=(hist>=0 ? (hist[1] < hist ?
col_grow_above : col_fall_above) : (hist[1] < hist ? col_grow_below : col_fall_below) ),transp=0 )
plot(macd,title="MACD",color=col_macd,transp=0)
plot(signal,title="Signal",color=col_signal,transp=0)
解决方法
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