如何在筛选器中计算表现？

筛选器表现数据使用以下公式计算：

//@version=5
indicator(title="Screener Performance")

rateOfreturn(ref) =>
	if ref < 0 and close > 0
		na
	else
		(close - ref) * 100 / math.abs(ref)

rr(bb, maxbarsback) =>
	open[maxbarsback] * 0 + bb == 0 ? na : rateOfreturn(open[bb])

perfYTD() =>
	var lastYearOpen = open
	if year > year[1]
		lastYearOpen := open
	rateOfreturn(lastYearOpen)

fastSearchTimeIndex(x, maxbarsback) =>
	mid = 0 * time[maxbarsback]
	right = math.min(bar_index, maxbarsback)
	left = 0
	if time < x
		0
	else
		for i = 0 to 9 by 1
			mid := math.ceil((left + right) / 2)
			if left == right
				break
			else if time[mid] < x
				right := mid
				continue
			else if time[mid] > x
				left := mid
				continue
			else
				break
		mid

week1 = 7
week_ago = timenow - 1000 * 60 * 60 * 24 * week1
week_ago_this_bar = time - 1000 * 60 * 60 * 24 * week1
countOfBarsWeekAgo = fastSearchTimeIndex(week_ago, week1)

month1 = 30
month_ago = timenow - 1000 * 60 * 60 * 24 * month1
countOfBars1MonthAgo = fastSearchTimeIndex(month_ago, month1)

month3 = 90
months3_ago = timenow - 1000 * 60 * 60 * 24 * month3
countOfBars3MonthAgo = fastSearchTimeIndex(months3_ago, month3)

month6 = 180
months6_ago = timenow - 1000 * 60 * 60 * 24 * month6
countOfBars6MonthAgo = fastSearchTimeIndex(months6_ago, month6)

years1 = 365
oneYearAgo = timenow - 1000 * 60 * 60 * 24 * years1
barsCountOneYear = fastSearchTimeIndex(oneYearAgo, years1)

years3 = 365 * 3
years3_ago = timenow - 1000 * 60 * 60 * 24 * years3
countOfBars3YearAgo = fastSearchTimeIndex(years3_ago, years3)

years5 = 365 * 4 + 366
years5_ago = timenow - 1000 * 60 * 60 * 24 * years5
countOfBars5YearAgo = fastSearchTimeIndex(years5_ago, years5)

years10 = (365 * 4 + 366) * 2
years10_ago = timenow - 1000 * 60 * 60 * 24 * years10
countOfBars10YearAgo = fastSearchTimeIndex(years10_ago, years10)

perfYTD = perfYTD()
plot((close - open[4]) / open[4] * 100, title='Perf.5D')
plot(rr(countOfBarsWeekAgo, week1), title='Perf.W')
plot(rr(countOfBars1MonthAgo, month1), title='Perf.1M')
plot(rr(countOfBars3MonthAgo, month3), title='Perf.3M')
plot(rr(countOfBars6MonthAgo, month6), title='Perf.6M')
plot(rr(barsCountOneYear, years1), title='Perf.Y')
plot(rr(countOfBars3YearAgo, years3), title='Perf.3Y')
plot(rr(countOfBars5YearAgo, years5), title='Perf.5Y')
plot(rr(countOfBars10YearAgo, years10), title='Perf.10Y')
plot(perfYTD, title='Perf.YTD')

注意：由于时间的原因，此脚本的历史值和实时值不同，请参阅 https://www.tradingview.com/pine-script-docs/en/v4/essential/Indicator_repainting.html

对于视觉显示，您可以使用图表的每日时间周期透过 Pine 编辑器将此脚本加到您的图表中。图表上将出现一个指标，其图表将显示每种表现类型的值。

涨跌% vs 表现%: 

假设今天是星期二。周涨跌计算当前收盘价（周二）与上周收盘价（上周五收盘价）之间的差值。周表现计算当前收盘价（周二）和一周前的收盘价（上周二）之间的差值。