Question

尝试绘制选定的背景颜色以提醒自己，当我交易日内保证金率开始和结束的时间时。我从另一个指标复制并弄弄了它，尽管我并没有太大改变。不断收到“未声明的标识符”错误。无法理解我在做什么错。错误：

Error: Undeclared identifier `input.string`;
Error: Undeclared identifier `input.string`;
Error: Undeclared identifier `begin0`;
Error: Undeclared identifier `end0`;
Error: Undeclared identifier `sess0`;
Error: Undeclared identifier `bgPlot0`

代码：

study(title="Highlight/Display/Show intraday trading session/period", shorttitle="intraday", overlay=true)
use0 = input(true, title="Highlight intraday trading session")
begin0 = input(title="Begin", type=input.string, defval="0800")
end0 = input(title="End", type=input.string, defval="1500")
sess0 = begin0 + "-" + end0
bgPlot0 = time(period, sess0)
bgcolor(use0 and bgPlot0 > 0 ? black : na, transp=98)

Answer 1

您混合使用了v3和v4语法：

//@version=4
study(title="Highlight/Display/Show intraday trading session/period", shorttitle="intraday", overlay=true)
use0 = input(true, title="Highlight intraday trading session")
begin0 = input(title="Begin", type=input.string, defval="0800")
end0 = input(title="End", type=input.string, defval="1500")
sess0 = begin0 + "-" + end0
bgPlot0 = time(timeframe.period, sess0)
bgcolor(use0 and bgPlot0 > 0 ? color.black : na, transp=98)

这些是v4文档：

https://www.tradingview.com/pine-script-reference/v4/

https://www.tradingview.com/pine-script-docs/en/v4/Introduction.html

尝试绘制日内保证金率的背景颜色

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