Params

//此处添加参数

Numeric length(30);

Vars

//此处添加变量

Numeric avg;

Global Integer timerId;

Series<Numeric> bar_in_day;

Series<Numeric> highest_in_day;

Series<Numeric> lowest_in_day;

Series<Numeric> trade_count;

Bool isFirstDay(false); // 标记是否为数据集的第一天

Defs

Events

//此处实现事件函数

OnInit()

{

isFirstDay = true;

}

//Bar更新事件函数，参数indexs表示变化的数据源图层ID数组

OnBar(ArrayRef<Integer> indexs)

{

if(TrueDate(0)<>TrueDate(1) || isFirstDay)

{

bar_in_day = 0;

highest_in_day = high;

lowest_in_day = low;

}

bar_in_day = bar_in_day + 1;

Commentary(\"当天第几根bar：\"+text(bar_in_day));

If(bar_in_day <= length)

{

highest_in_day = max(highest_in_day,high);

lowest_in_day = min(lowest_in_day,low);

}

//PlotNumeric(\"low:\",low);

PlotNumeric(\"highest_in_day:\",highest_in_day);

PlotNumeric(\"lowest_in_day:\",lowest_in_day);

}

这段代码是在k线中显示当天最低和最高价，但是第一天的最低价总是为0，是什么原因？