新人对MQL4和MQL5的任何问题，对算法和代码的帮助和讨论

Artyom Trishkin 2018.10.17 18:16 #6681

psyman:

我读了你因我的主题而产生的信件，这很有趣:-)但引起所有这些讨论的问题是什么？

通过SetIndexBuffer(1, tmp1) 声明一个数组，我没有得到任何结果。当然，我可以在同一个循环中增加数组大小，但我想知道一个更简单、更有效的方法。

给我看完整的代码--你在那里做了什么，你想要什么，你已经得到什么。

psyman 2018.10.17 18:27 #6682

我想观察波动情况。至少要从开盘-收盘开始，用均线做一个时期的平均数。

//+------------------------------------------------------------------+
//|                                                        _null.mq4 |
//|                        Copyright 2014, MetaQuotes Software Corp. |
//|                                              http://www.mql5.com |
//+------------------------------------------------------------------+
#property copyright "Copyright 2014, MetaQuotes Software Corp."
#property link      "http://www.mql5.com"
#property version   "1.00"
#property strict
#property indicator_separate_window
#property indicator_buffers 1
#property indicator_plots   1
//--- plot OC
#property indicator_label1  "O-C"
#property indicator_type1   DRAW_LINE
#property indicator_color1  clrSteelBlue
#property indicator_style1  STYLE_SOLID
#property indicator_width1  1
//--- indicator buffers
double         ip1Buf[];

input int ip1=100;

//+------------------------------------------------------------------+
//| Custom indicator initialization function                         |
//+------------------------------------------------------------------+
int OnInit()
  {
  
string s_name1;

s_name1="O-C (" + IntegerToString(ip1) + ")";

IndicatorShortName(s_name1);
SetIndexLabel(0, s_name1);


//--- indicator buffers mapping
   SetIndexBuffer(0,ip1Buf);
   
//---
   return(INIT_SUCCEEDED);
  }
//+------------------------------------------------------------------+
//| Custom indicator iteration function                              |
//+------------------------------------------------------------------+
int OnCalculate(const int rates_total,
                const int prev_calculated,
                const datetime &time[],
                const double &open[],
                const double &high[],
                const double &low[],
                const double &close[],
                const long &tick_volume[],
                const long &volume[],
                const int &spread[])
  {


int i;
double tmp1[];

SetIndexBuffer(1, tmp1);


      Print("rates_total = ",rates_total);
      for(i=1; i<rates_total-1; i++)
      {
      tmp1[i]=close[i];      
      ip1Buf[i]=iMA(NULL,0,100,0,0,tmp1[i],0);
      
      }
   
//--- return value of prev_calculated for next call
   return(rates_total);
  }
//+------------------------------------------------------------------+