如何获取图表HLine对象的价格并计算斐波那契水平

问题描述

三部分问题:

1. 如何在图表上按名称查找用户创建的2条水平线并返回其价格.
2. 然后确定最近的价格与哪个HLine交叉以确定趋势方向.
3. 根据价格和方向计算斐波那契水平

1. How to find 2 user created horizontal lines on a chart by name and return the price of each.
2. Then determine which HLine was crossed by the price most recently to determine trend direction.
3. Calculate Fibonacci levels based on prices and direction

推荐答案

斐波那契对象的工作示例，该对象可以由用户编辑并打印斐波那契水平.

Working example of Fibonacci object that can be edited by the user and printing of fibonacci levels.

#include <ChartObjects/ChartObjectsFibo.mqh>
CChartObjectFibo *Fibo;

int OnInit()
    {
     Fibo = new CChartObjectFibo();
     #Create object and set some defaults
     if(!Fibo.Create(0,"Fibonacci",0,Time[5],Open[5],Time[0],Open[0]))
     {
            return(INIT_FAILED);
     }
     # Allow user to drag object
     Fibo.Selectable(true);
     return(INIT_SUCCEEDED);
    }

void OnDeinit(const int reason)
    {
     delete Fibo;
    }

void OnTick()
    {
     string level_description;
     double level_value;
     string printString="Fibonacci Levels - ";
     # Get the two anchor prices
     double p1 = Fibo.GetDouble(OBJPROP_PRICE,0);
     double p2 = Fibo.GetDouble(OBJPROP_PRICE,1);
     # Calculate range
     double range=MathAbs(p1-p2);
     for(int i=0;i<Fibo.LevelsCount();i++)
     {
            level_description=Fibo.LevelDescription(i);
            # Calculate price of level
            level_value=(p2>p1)?p2-range*Fibo.LevelValue(i):p2+range*Fibo.LevelValue(i);
            printString=StringFormat("%s %s:%.5f",printString,level_description,level_value);
     }
     Print(printString);
    }

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