初学者的问题 MQL5 MT5 MetaTrader 5 - 页 689

[Andrey F. Zelinsky]

Roma Ivanov:
该公式来自这里 - https://www.mql5.com/ru/articles/1492

在链接的文章中 -- 操作^是一个功率的增加

[Artyom Trishkin]

Roma Ivanov:
该公式取自这里 - https://www.mql5.com/ru/articles/1492

我还没有读过。但从公式和文章（Excel）中的图表来看，这是一个功率的增加。

我可能是错的。

[Mikhail Toptunov]

好时光!想知道如何将一个二维数组翻译成*.csv格式，找到了一个合适的例子，但它是针对mt4的，需要5。

//+------------------------------------------------------------------+
//|                                                  generateCsv.mq4 |
//|         Copyright © 2006, Antonio Banderass. All rights reserved |
//|                                               [e-mail] |
//+------------------------------------------------------------------+
#property copyright "Copyright © 2006, Antonio Banderass. All rights reserved"
#property link      "[e-mail]"
#property library
#define ARRAY_SIZE_X 16
#define ARRAY_SIZE_Y 16
//+------------------------------------------------------------------+
//| PrepareString                                                    |
//+------------------------------------------------------------------+
string PrepareString(string s)
  {
   bool exit = false;
   int index = 0;
   string str = s;
//----
   while(!exit)
     {
       index = StringFind(str, ".", index);
       if(index > -1)
           str = StringSetCharacter(str, index, ',');
       else
           exit = true;
     }
   return(str);
  }
//+------------------------------------------------------------------+
//| GenerateCsv                                                      |
//+------------------------------------------------------------------+
int GenerateCsv(string fileName, int arraySizeX, int arraySizeY,
                double arrayIndexX[], double arrayIndexY[], double arrayZ[][]) // Ругается говорит - arrays are passed by reference only пробовал добавить &_array.. но запинается на двумерном

  {
   int handle = FileOpen(fileName, FILE_CSV|FILE_WRITE, ' '), x, y;
   string str;
   if(handle < 1)
     {
       Print("Error:", GetLastError());
       return(handle);
     }
   else
     {
       str = ";";
       for(x = 0; x < arraySizeX; x++)
         {
           str = str + arrayIndexX[x];
           str = str + ";";        
         }
       FileWrite(handle, PrepareString(str));
       for(y = 0; y < arraySizeY; y++)
         {
           str = "";  
           str = str + arrayIndexY[y] + ";";
           for(x = 0; x < arraySizeX; x++)
             {
               str = str + arrayZ[x,y];
               str = str + ";";        
             }
           FileWrite(handle, PrepareString(str));
         }
     }
   FileClose(handle);  
   return(handle);
  }
//+------------------------------------------------------------------+

https://www.mql5.com/ru/articles/1443

[Artyom Trishkin]

Top2n:

好时光!想知道如何将一个二维数组翻译成*.csv格式，找到了一个合适的例子，但它是针对mt4的，需要5。

https://www.mql5.com/ru/articles/1443

数组只能通过引用来传输。

int GenerateCsv(string fileName, int arraySizeX, int arraySizeY,
                double & arrayIndexX[], double & arrayIndexY[], double & arrayZ[][])

[Mikhail Toptunov]

Artyom Trishkin:

数组只能通过引用来传输。

int GenerateCsv(string fileName, int arraySizeX, int arraySizeY,
                double & arrayIndexX[], double & arrayIndexY[], double & arrayZ[][])

但它却对ArrayZ[][] 发誓说-'['-无效的索引值

[Artyom Trishkin]

Top2n:
然而它却失败了，arrayZ[][]说-'['-无效的索引值

arrayZ声明的维数是多少？

[Mikhail Toptunov]

Artyom Trishkin:
arrayZ声明的维数是多少？

我声明了&arrayZ[][3000]，如果我把它等同于16，那么 事件处理函数 根本找不到。

#define ARRAY_SIZE_X 16
#define ARRAY_SIZE_Y 16

int start()
  {
   int x, y;
   double arrayIndexX[ARRAY_SIZE_X];
   double arrayIndexY[ARRAY_SIZE_Y];
   double arrayZ[ARRAY_SIZE_X,ARRAY_SIZE_Y];
//----
   for(x = 0; x < ARRAY_SIZE_X; x++)
       arrayIndexX[x] = x / 10.0;      
//----
   for(y = 0; y < ARRAY_SIZE_Y; y++)
       arrayIndexY[y] = y / 10.0;
//----
   for(x = 0; x < ARRAY_SIZE_X; x++)
       for(y = 0; y < ARRAY_SIZE_Y; y++)
           arrayZ[x,y] = MathSin(arrayIndexX[x] + arrayIndexY[y]);
   GenerateCsv("test.csv", ARRAY_SIZE_X, ARRAY_SIZE_Y, arrayIndexX, arrayIndexY, arrayZ); // 'arrayZ' - parameter conversion not allowed
//----
   return(0);
  }

//+------------------------------------------------------------------+
//| PrepareString                                                    |
//+------------------------------------------------------------------+
string PrepareString(string s)
  {
   bool exit = false;
   int index = 0;
   string str = s;
//----
   while(!exit)
     {
       index = StringFind(str, ".", index);
       if(index > -1)
           str = StringSetCharacter(str, index, ',');
       else
           exit = true;
     }
   return(str);
  }
//+------------------------------------------------------------------+
//| GenerateCsv                                                      |
//+------------------------------------------------------------------+
int GenerateCsv(string fileName, int arraySizeX, int arraySizeY,
                double &arrayIndexX[], double &arrayIndexY[], double &arrayZ[][3000])
  {
   int handle = FileOpen(fileName, FILE_CSV|FILE_WRITE, ' '), x, y;
   string str;
   if(handle < 1)
     {
       Print("Error:", GetLastError());
       return(handle);
     }
   else
     {
       str = ";";
       for(x = 0; x < arraySizeX; x++)
         {
           str = str + arrayIndexX[x];
           str = str + ";";        
         }
       FileWrite(handle, PrepareString(str));
       for(y = 0; y < arraySizeY; y++)
         {
           str = "";  
           str = str + arrayIndexY[y] + ";";
           for(x = 0; x < arraySizeX; x++)
             {
               str = str + arrayZ[x,y];
               str = str + ";";        
             }
           FileWrite(handle, PrepareString(str));
         }
     }
   FileClose(handle);  
   return(handle);
  }
//+------------------------------------------------------------------+

[Artyom Trishkin]

Top2n:

宣告 &arrayZ[][3000]

string PrepareString(string s);

int GenerateCsv(string fileName, int arraySizeX, int arraySizeY,

                double &arrayIndexX[], double &arrayIndexY[], 

                double &arrayZ[][3000]); 

int start()
  {
   int x, y;
   double arrayIndexX[ARRAY_SIZE_X];
   double arrayIndexY[ARRAY_SIZE_Y];
   double arrayZ[ARRAY_SIZE_X,ARRAY_SIZE_Y];
//----
   for(x = 0; x < ARRAY_SIZE_X; x++)
       arrayIndexX[x] = x / 10.0;      
//----
   for(y = 0; y < ARRAY_SIZE_Y; y++)
       arrayIndexY[y] = y / 10.0;
//----
   for(x = 0; x < ARRAY_SIZE_X; x++)
       for(y = 0; y < ARRAY_SIZE_Y; y++)
           arrayZ[x,y] = MathSin(arrayIndexX[x] + arrayIndexY[y]);
   GenerateCsv("test.csv", ARRAY_SIZE_X, ARRAY_SIZE_Y, arrayIndexX, arrayIndexY, arrayZ); // 'arrayZ' - parameter conversion not allowed
//----
   return(0);
  }

你已经拿了一个现成的了。那里是怎么做的呢？我不能看它--我在用手机写作。

[Subscribers]

如何改变使用CAppDialog 类创建的面板的颜色？

   if(!CAppDialog::Create(chart,name,subwin,x1,y1,x2,y2))
      return(false);

[Mikhail Toptunov]

Artyom Trishkin:
你一定已经准备好了。那里是怎么做的呢？我查不到--我是用手机写的。

我对造成的不便表示歉意。

//+------------------------------------------------------------------+
//| start                                                            |
//+------------------------------------------------------------------+
int start()
  {

а надо 

//+------------------------------------------------------------------+
//| start                                                            |
//+------------------------------------------------------------------+
int OnStart

  { 

但文件的创建，并不包含要求的数据。

结果 - 一列充满了17行布尔值的真值

有一个字符串StringSetChar - 在开始时发誓。

将其改为boolStringSetCharacter- 这一定是bool的原因。

//+------------------------------------------------------------------+
//| PrepareString                                                    |
//+------------------------------------------------------------------+
string PrepareString(string s)
  {
   bool exit = false;
   int index = 0;
   string str = s;
//----
   while(!exit)
     {
       index = StringFind(str, ".", index);
       if(index > -1)
           str = StringSetChar(str, index, ',');
       else
           exit = true;
     }
   return(str);
  }