我正在制作一個免費的 VPVR，據說它比目前免費提供的更好。
我注意到，如果我增加直方圖的數量，則圖表不會顯示其中一些直方圖。
第一張圖片有 27 個直方圖。
第二張圖片有 34 個直方圖。
我確定值在那里，因為我可以看到條形被偏移（看第二張圖片）：
- 為什么它不繪制那些條形？
- 我該如何解決這個問題？
我已經嘗試過線條，它也有同樣的效果。就好像有一個限制，如果我洗掉兩個 box.new 呼叫中的一個，我將這個限制設定為 > 54 個直方圖。
遵循我目前正在處理的腳本：
// This source code is subject to the terms of the Mozilla Public License 2.0 at https://mozilla.org/MPL/2.0/
// ? Fr3d0C0rl30n3
//@version=4
study("Fr3d0's Volume Profile Visible Range", "VPVR", overlay=true)
DEFAULT_COLOR = color.new(color.gray, 0)
BUY_COLOR = color.new(color.green, 0)
SELL_COLOR = color.new(color.red, 0)
SPECIAL_COLOR = color.new(color.yellow, 0)
TIME_UNIT = time - time[1]
numOfBars = input(100, 'Number of bars', minval=20, maxval=500)
rangeHigh = highest(high, numOfBars)
rangeLow = lowest(low, numOfBars)
rangeHeight = rangeHigh - rangeLow
numOfHistograms = input(50, 'Number of histograms', minval=20, maxval=50)
widestHistogramWidth = input(50, 'Width of the PoC', minval=20, maxval=100)
histogramHeight = rangeHeight / numOfHistograms
histogramLowList = array.new_float(numOfHistograms, na)
histogramHighList = array.new_float(numOfHistograms, na)
histogramPriceList = array.new_float(numOfHistograms, 0.0)
histogramBuyVolumeList = array.new_float(numOfHistograms, 0.0)
histogramSellVolumeList = array.new_float(numOfHistograms, 0.0)
histogramVolumePercentageList = array.new_float(numOfHistograms, 0.0)
histogramIsPOCList = array.new_bool(numOfHistograms, false)
if barstate.islast
// Define lows and highs of the histograms
for i = 0 to numOfHistograms - 1
histogramLow = rangeLow histogramHeight * i
histogramHigh = rangeLow histogramHeight * (i 1)
array.set(histogramLowList, i, histogramLow)
array.set(histogramHighList, i, histogramHigh)
array.set(histogramPriceList, i, (histogramLow histogramHigh) / 2)
// Assign bar's volumes to histograms
for i = 0 to numOfBars - 1
currentBarHeight = high[i] - low[i]
currentBuyVolume = iff((high[i] == low[i]), 0, volume[i] * (close[i] - low[i]) / currentBarHeight)
currentSellVolume = iff((high[i] == low[i]), 0, volume[i] * (high[i] - close[i]) / currentBarHeight)
// Define the percentages of the current volume to give to histograms
for j = 0 to numOfHistograms - 1
histogramLow = array.get(histogramLowList, j)
histogramHigh = array.get(histogramHighList, j)
target = max(histogramHigh, high[i]) - min(histogramLow, low[i])
- (max(histogramHigh, high[i]) - min(histogramHigh, high[i]))
- (max(histogramLow, low[i]) - min(histogramLow, low[i]))
histogramVolumePercentage = target / currentBarHeight
histogramBuyVolume = array.get(histogramBuyVolumeList, j)
histogramSellVolume = array.get(histogramSellVolumeList, j)
// If there is at least one histogram affected
// then divide the current volume by the number of histograms affected
if histogramVolumePercentage > 0
array.set(histogramBuyVolumeList, j, histogramBuyVolume currentBuyVolume * histogramVolumePercentage)
array.set(histogramSellVolumeList, j, histogramSellVolume currentSellVolume * histogramVolumePercentage)
// Find the histogram with the highest volume
highestHistogramVolume = 0.0
for i = 0 to numOfHistograms - 1
histogramBuyVolume = array.get(histogramBuyVolumeList, i)
histogramSellVolume = array.get(histogramSellVolumeList, i)
histogramVolume = histogramBuyVolume histogramSellVolume
highestHistogramVolume := max(highestHistogramVolume, histogramVolume)
// Mark the Point of Control
for i = 0 to numOfHistograms - 1
histogramVolume = array.get(histogramBuyVolumeList, i) array.get(histogramSellVolumeList, i)
if histogramVolume == highestHistogramVolume
array.set(histogramIsPOCList, i, true)
// Draw top and bottom of the range considered
line.new(time[numOfBars], rangeHigh, time_close, rangeHigh, xloc=xloc.bar_time, color=DEFAULT_COLOR, width = 2)
line.new(time[numOfBars], rangeLow, time_close, rangeLow, xloc=xloc.bar_time, color=DEFAULT_COLOR, width = 2)
// Draw histograms and highlight the Point of Control
for i = 0 to numOfHistograms - 1
histogramLow = array.get(histogramLowList, i)
histogramHigh = array.get(histogramHighList, i)
histogramBuyVolume = array.get(histogramBuyVolumeList, i)
histogramSellVolume = array.get(histogramSellVolumeList, i)
histogramVolume = histogramBuyVolume histogramSellVolume
histogramWidth = widestHistogramWidth * histogramVolume / highestHistogramVolume
histogramBuyWidth = floor(histogramWidth * histogramBuyVolume / histogramVolume)
histogramSellWidth = floor(histogramWidth * histogramSellVolume / histogramVolume)
isPOC = array.get(histogramIsPOCList, i)
// Draw buy and send histograms
box.new(left=bar_index 1, top=histogramHigh, right=bar_index 1 histogramBuyWidth, bottom=histogramLow, bgcolor=BUY_COLOR, border_color=isPOC ? SPECIAL_COLOR : color.new(color.black, 80))
box.new(left=bar_index 1 histogramBuyWidth, top=histogramHigh, right=bar_index 1 histogramBuyWidth histogramSellWidth, bottom=histogramLow, bgcolor=SELL_COLOR, border_color=isPOC ? SPECIAL_COLOR : color.new(color.black, 80))
謝謝，弗雷多
uj5u.com熱心網友回復：
對于線條、標簽和框，如果您需要超過可用的默認限制 50，則需要為它們設定 study/strategy() 引數，例如
study("My study", max_lines_count = 500, max_boxes_count = 500, max_labels_count = 500)
最大限制為 500。
https://www.tradingview.com/pine-script-reference/v4/#fun_study
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