本页源码来自 TradingView 公开发布的开源脚本，版权归原作者所有， 请遵循其原始许可（Pine 脚本常见 CC BY-NC-SA / MPL-2.0 / MIT）。 本项目仅用于研究检索与许可范围内的移植。
//@version=4
study(title="Heatmap Volume [xdecow]", shorttitle="HVol [xdecow]", max_bars_back=2000)
//------------------------------------------------------------------------------
// Inputs
length = input(610, title="MA Length", type=input.integer, minval=2)
slength = input(2000, title='Std Length', type=input.integer, minval=2)
cmode = input('Heatmap', 'Color Mode', options=['Heatmap', 'Up/Down'])
bcolor_enabled = input(true, 'Colored bars')
showlevels = input(true, 'Show Heatmap zones')
osc = input(false, 'Show as oscillator')
thresholdExtraHigh = input(4, title="Extra High Volume Threshold", type=input.float)
thresholdHigh = input(2.5, title="High Volume Threshold", type=input.float)
thresholdMedium = input(1, title="Medium Volume Threshold", type=input.float)
thresholdNormal = input(-0.5, title="Normal Volume Threshold", type=input.float)
//------------------------------------------------------------------------------
// Colors
// heatmap colors
chm1 = #ff0000 // extra high red
chm2 = #ff7800 // high orange
chm3 = #ffcf03 // medium yellow
chm4 = #a0d6dc // normal
chm5 = #1f9cac // low
// heatmap colors
chmthresholdExtraHigh = input(chm1, 'Heatmap Extra High')
chmthresholdHigh = input(chm2, 'Heatmap High')
chmthresholdMedium = input(chm3, 'Heatmap Medium')
chmthresholdNormal = input(chm4, 'Heatmap Normal')
chmthresholdLow = input(chm5, 'Heatmap Low')
// up colors
cupthresholdExtraHigh = input(#00FF00, 'Up Extra High')
cupthresholdHigh = input(#30FF30, 'Up High')
cupthresholdMedium = input(#60FF60, 'Up Medium')
cupthresholdNormal = input(#8FFF8F, 'Up Normal')
cupthresholdLow = input(#BFFFBF, 'Up Low')
// down colors
cdnthresholdExtraHigh = input(#FF0000, 'Down Extra High')
cdnthresholdHigh = input(#FF3030, 'Down High')
cdnthresholdMedium = input(#FF6060, 'Down Medium')
cdnthresholdNormal = input(#FF8F8F, 'Down Normal')
cdnthresholdLow = input(#FFBFBF, 'Down Low')
cthresholdExtraHighUp = cmode == 'Heatmap' ? chmthresholdExtraHigh : cupthresholdExtraHigh
cthresholdHighUp = cmode == 'Heatmap' ? chmthresholdHigh : cupthresholdHigh
cthresholdMediumUp = cmode == 'Heatmap' ? chmthresholdMedium : cupthresholdMedium
cthresholdNormalUp = cmode == 'Heatmap' ? chmthresholdNormal : cupthresholdNormal
cthresholdLowUp = cmode == 'Heatmap' ? chmthresholdLow : cupthresholdLow
cthresholdExtraHighDn = cmode == 'Heatmap' ? chmthresholdExtraHigh : cdnthresholdExtraHigh
cthresholdHighDn = cmode == 'Heatmap' ? chmthresholdHigh : cdnthresholdHigh
cthresholdMediumDn = cmode == 'Heatmap' ? chmthresholdMedium : cdnthresholdMedium
cthresholdNormalDn = cmode == 'Heatmap' ? chmthresholdNormal : cdnthresholdNormal
cthresholdLowDn = cmode == 'Heatmap' ? chmthresholdLow : cdnthresholdLow
//------------------------------------------------------------------------------
// Calcs
length := length > bar_index + 1 ? bar_index + 1 : length
slength := slength > bar_index + 1 ? bar_index + 1 : slength
pstdev(Series, Period) =>
mean = sum(Series, Period) / Period
summation = 0.0
for i=0 to Period-1
sampleMinusMean = nz(Series[i]) - mean
summation := summation + sampleMinusMean * sampleMinusMean
return = sqrt(summation / Period)
mean = sma(volume, length)
std = pstdev(volume, slength)
stdbar = (volume - mean) / std
dir = close > open
v = osc ? volume - mean : volume
mosc = osc ? 0 : mean
bcolor = stdbar > thresholdExtraHigh ? dir ? cthresholdExtraHighUp : cthresholdExtraHighDn :
stdbar > thresholdHigh ? dir ? cthresholdHighUp : cthresholdHighDn :
stdbar > thresholdMedium ? dir ? cthresholdMediumUp : cthresholdMediumDn :
stdbar > thresholdNormal ? dir ? cthresholdNormalUp : cthresholdNormalDn :
dir ? cthresholdLowUp : cthresholdLowDn
//------------------------------------------------------------------------------
// Plots
barcolor(bcolor_enabled ? bcolor : na, editable=false)
// heatmap lines
pt = plot(showlevels ? highest(v, min(300, bar_index+1)) * 9999 : na, color=na, display=display.none, editable=false)
p0 = plot(showlevels ? osc ? lowest(v, min(300, bar_index+1)) * 9999 : 0 : na, color=na, display=display.none, editable=false)
p1 = plot(showlevels ? std * thresholdExtraHigh + mosc : na, color=na, display=display.none, editable=false)
p2 = plot(showlevels ? std * thresholdHigh + mosc: na, color=na, display=display.none, editable=false)
p3 = plot(showlevels ? std * thresholdMedium + mosc : na, color=na, display=display.none, editable=false)
p4 = plot(showlevels ? std * thresholdNormal + mosc : na, color=na, display=display.none, editable=false)
// heatmap fills
tpf = 85
fill(pt, p1, chm1, transp=tpf, title='Extra High heatmap zone')
fill(p1, p2, chm2, transp=tpf, title='High heatmap zone')
fill(p2, p3, chm3, transp=tpf, title='Medium heatmap zone')
fill(p3, p4, chm4, transp=tpf, title='Normal heatmap zone')
fill(p4, p0, chm5, transp=tpf, title='Low heatmap zone')
plot(v, color=bcolor, style=plot.style_columns, title='Volume', transp=0, editable=false)
plot(osc ? na : mean, color=#000000, linewidth=2, title='Moving Average', style=plot.style_line, transp=0, display=display.none)
//------------------------------------------------------------------------------
// Alerts
conditionExtraHigh = stdbar > thresholdExtraHigh
conditionHigh = stdbar <= thresholdExtraHigh and stdbar > thresholdHigh
conditionMedium = stdbar <= thresholdHigh and stdbar > thresholdMedium
conditionNormal = stdbar <= thresholdMedium and stdbar > thresholdNormal
conditionLow = stdbar <= thresholdNormal
alertcondition(conditionExtraHigh, title='Any Extra High Vol', message='Any Bar Extra High Volume Threshold')
alertcondition(conditionExtraHigh and open < close, title='Up Extra High', message='Up Bar Extra High Volume Threshold')
alertcondition(conditionExtraHigh and open > close, title='Down Extra High', message='Down Bar Extra High Volume Threshold')
alertcondition(conditionHigh, title='Any High Vol', message='Any Bar High Volume Threshold')
alertcondition(conditionHigh and open < close, title='Up High Vol', message='Up Bar High Volume Threshold')
alertcondition(conditionHigh and open > close, title='Down High Vol', message='Down Bar High Volume Threshold')
alertcondition(conditionMedium, title='Any Medium Vol', message='Any Bar Medium Volume Threshold')
alertcondition(conditionMedium and open < close, title='Up Medium Vol', message='Up Bar Medium Volume Threshold')
alertcondition(conditionMedium and open > close, title='Down Medium Vol', message='Down Bar Medium Volume Threshold')