Errors, bugs, questions - page 2635

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Is this platform (MT5) designed for trading in financial markets or is it a circus? What do we have to do every time we have to redo the codes for your updates? I'm sick of it.

 
Aleksandr Prishenko:

Is this platform (MT5) designed for trading in financial markets or is it a circus? What do we have to do every time we have to redo the codes for your updates? I'm sick of it.

hmm....

what exactly do you need to revise? maybe i do too?

I don't think I've done anything about updates.........

  
#include <MovingAverages.mqh>
//--- indicator settings
#property indicator_separate_window
#property indicator_buffers 6
#property indicator_plots   4
//--- plot Value
#property indicator_label1  "Volume;Volume1"
#property indicator_type1   DRAW_FILLING
#property indicator_color1  clrBlue,clrRed
#property indicator_style1  STYLE_SOLID
#property indicator_width1  2
//--- plot Middle
#property indicator_label2  "Middle line"
#property indicator_type2   DRAW_LINE
#property indicator_color2  clrMediumOrchid
#property indicator_style2  STYLE_SOLID
#property indicator_width2  1
//--- plot OverBought
#property indicator_label3  "Bands upper"
#property indicator_type3   DRAW_LINE
#property indicator_color3  clrDeepPink
#property indicator_style3  STYLE_SOLID
#property indicator_width3  1
//--- plot OverSold
#property indicator_label4  "Bands lower" //нижняя линия
#property indicator_type4   DRAW_LINE
#property indicator_color4  clrDeepPink
#property indicator_style4  STYLE_SOLID
#property indicator_width4  1
//---
enum OSCILLATOR_NAME {
   MACD,             // MACD
   MOMENTUM,         // Momentum
   RSI,              // RSI
   MFI,               // MFI 
   AC                // AC
};
//---
enum LEVEL_MODE {
   CONST_VALUE_MODE, // Constant level value mode
   MA_MODE,          // Moving Average mode
   BB_MODE           // Bollinger Bands Mode
};
//---
enum DRAW_MODE {
   LINE,             // Line
   FILLING,          // Filling
   HISTOGRAM         // Histogram
};
//--- input parameters
input ENUM_TIMEFRAMES      TF_Oscillator = PERIOD_CURRENT;                        // TIMEFRAMES Oscillator
input OSCILLATOR_NAME      InpOscillator = MACD;                         // Oscillator
input int                  InpOscPeriod1 = 1;                          // MACD Fast EMA / Period for: RSI,MFI,Momentum 
input int                  InpOscPeriod2 = 34;                           //  MACD Slow EMA
input int                  InpOscPeriod3 = 1;                           //  MACD Signal
input ENUM_APPLIED_PRICE   InpAppliedPrice = PRICE_CLOSE;               // Applied price
input  ENUM_APPLIED_VOLUME InpVOLUME = VOLUME_TICK;                    //Applied Volume for MFI
input DRAW_MODE            InpDrawMode = LINE;                       // Draw Mode 
input int                  InpLevelsPeriod = 40;                        // Levels Period Upper
input int                  InpLevelsPeriod1 = 35;                        // Levels Period  Lower
input double               InpLevelsIndent = 3.0;                       // Deviation Upper
input double               InpLevelsIndent1 = 4.0;                       //  Deviation Lower

 LEVEL_MODE           InpLevelsMode = BB_MODE;                     // Levels Mode
bool                 InpIndentAutoCorrection = true;              // Levels Auto Correction
//input string               InpDivider = "---For Stochastic or MACD---"; // Just Divider NOT Parameter 
//input ENUM_STO_PRICE       InpStochPrice = STO_LOWHIGH;                 // Stochastic Price

//--- indicator buffers
double         ExtBuffer1[]; //Line
double         ExtBuffer2[];//Middle
double         ExtBuffer3[];//Upper
double         ExtBuffer4[];//Lowe
double         ExtBuffer5[];
double         ExtBuffer6[];
//--- global variables
int            oscPeriod1;
int            levelsPeriod;
int            levelsPeriod1;
int            minRequiredBars;
int            oscHandle;
int            oscPeriod2;
int            oscPeriod3;
double         midValue;
double         addValue;
double         levelsIndent,levelsIndent1 ;
//+------------------------------------------------------------------+
//| Custom indicator initialization function                         |
//+------------------------------------------------------------------+
int OnInit() {
//---
   if ( InpOscPeriod1 < 1 ) {
      oscPeriod1 = 14;
      printf("Incorrected input parameter InpOscPeriod1 = %d. Indicator will use value %d.", InpOscPeriod1, oscPeriod1);
   } else {
      oscPeriod1 = InpOscPeriod1;
   }
   
   if ( InpLevelsPeriod < 1 ) {
      levelsPeriod = 10;
      printf("Incorrected input parameter InpLevelsPeriod = %d. Indicator will use value %d.", InpLevelsPeriod, levelsPeriod);
   } else {
      levelsPeriod = InpLevelsPeriod;
   }
   if ( InpLevelsPeriod1 < 1 ) {
      levelsPeriod = 10;
      printf("Incorrected input parameter InpLevelsPeriod = %d. Indicator will use value %d.", InpLevelsPeriod, levelsPeriod);
   } else {
      levelsPeriod1 = InpLevelsPeriod1;
   }
   
   if ( InpOscPeriod2 < 1 ) {
      oscPeriod2 = 3;
      printf("Incorrected input parameter InpOscPeriod2 = %d. Indicator will use value %d.", InpOscPeriod2, oscPeriod2);
   } else {
      oscPeriod2 = InpOscPeriod2;
   }
   
   if ( InpOscPeriod3 < 1 ) {
      oscPeriod3 = 3;
      printf("Incorrected input parameter InpOscPeriod3 = %d. Indicator will use value %d.", InpOscPeriod3, oscPeriod3);
   } else {
      oscPeriod3 = InpOscPeriod3;
   }
   
   levelsIndent = MathAbs(InpLevelsIndent);// Levels Indent / Deviation
   levelsIndent1 = MathAbs(InpLevelsIndent1);// Levels Indent / Deviation
//---
   minRequiredBars = 20; // oscPeriod1 + oscPeriod2 + oscPeriod3 + levelsPeriod - 1;
//--- indicator buffers mapping
   SetIndexBuffer(0, ExtBuffer1, INDICATOR_DATA);
   SetIndexBuffer(1, ExtBuffer2, INDICATOR_DATA);
   SetIndexBuffer(2, ExtBuffer3, INDICATOR_DATA);
   SetIndexBuffer(3, ExtBuffer4, INDICATOR_DATA);
   SetIndexBuffer(4, ExtBuffer5, INDICATOR_DATA);
   SetIndexBuffer(5, ExtBuffer6, INDICATOR_DATA);
//---
   string shortname = "Oscillator For BBS: ";
//---
   switch ( InpOscillator ) {
 
      case MACD:
         oscHandle = iMACD(_Symbol, TF_Oscillator, oscPeriod1, oscPeriod2, oscPeriod3, InpAppliedPrice);
         midValue = 0.0;
         shortname += "MACD (" + (string)oscPeriod1 + ", " + (string)oscPeriod2 + ", " + (string)oscPeriod3 + ")";
         break;
         
      case MOMENTUM:
         oscHandle = iMomentum(_Symbol, TF_Oscillator, oscPeriod1, InpAppliedPrice);
         midValue = 100.0;
         levelsAutoCorrect(0.03, 5.0, 0.5);
         shortname += "Momentum (" + (string)oscPeriod1 + ")";
         break;
         
      case RSI:
         oscHandle = iRSI(_Symbol, TF_Oscillator, oscPeriod1, InpAppliedPrice);
         midValue = 50.0;
         levelsAutoCorrect(5.0, 50.0, 20.0);
         shortname += "RSI (" + (string)oscPeriod1 + ")";
         break;
      case MFI:
         oscHandle = iMFI(_Symbol, TF_Oscillator, oscPeriod1, InpVOLUME);
         midValue = 50.0;
         levelsAutoCorrect(5.0, 50.0, 20.0);
         shortname += "MFI (" + (string)oscPeriod1 + ")";
         break;
         
       case AC:
         oscHandle = iAC(_Symbol,0);
         midValue = 0.0;
         levelsAutoCorrect(5.0, 50.0, 20.0);
         shortname += "AC";
         break; 
               
      default:
         oscHandle = INVALID_HANDLE;
         Print("Unknown Oscillator!");
         return(-1);
   }
//---
   switch ( InpDrawMode ) {
      case FILLING:
         SetIndexBuffer(2, ExtBuffer3, INDICATOR_DATA);
         PlotIndexSetInteger(0, PLOT_DRAW_TYPE, DRAW_FILLING);
         break;
         
      case HISTOGRAM:
         SetIndexBuffer(2, ExtBuffer3, INDICATOR_COLOR_INDEX);
         PlotIndexSetInteger(0, PLOT_DRAW_TYPE, DRAW_COLOR_HISTOGRAM2);
         break;
         
      case LINE:
      default:
         SetIndexBuffer(2, ExtBuffer3, INDICATOR_DATA);
         PlotIndexSetInteger(0, PLOT_DRAW_TYPE, DRAW_LINE);
         break;
   }
//---
   IndicatorSetString(INDICATOR_SHORTNAME, shortname); 
//---
   return(0);
}
//+------------------------------------------------------------------+
//| Levels indent / deviation correction function                    |
//+------------------------------------------------------------------+
void levelsAutoCorrect(double minIndent, double maxIndent, double correctIndent)
 {
//---
   if ( InpLevelsMode == BB_MODE ) {
      if ( levelsIndent > 4.0   ) {
         levelsIndent = 2.0;
         printf("Incorrected deviation input parameter InpLevelsIndent = %f. Indicator will use value %f.", 
            InpLevelsIndent, levelsIndent);
      }
      if ( levelsIndent1 > 4.0  ) {
         levelsIndent1 = 2.0;
         printf("Incorrected deviation input parameter InpLevelsIndent = %f. Indicator will use value %f.", 
            InpLevelsIndent, levelsIndent1);
      }
   } else {
      if ( levelsIndent < minIndent || levelsIndent > maxIndent ) {
         levelsIndent = correctIndent;
         printf("Incorrected indent input parameter InpLevelsIndent = %f. Indicator will use value %f.", 
            InpLevelsIndent, levelsIndent);
      }
      
      if ( levelsIndent1 < minIndent || levelsIndent1 > maxIndent ) {
         levelsIndent1 = correctIndent;
         printf("Incorrected indent input parameter InpLevelsIndent = %f. Indicator will use value %f.", 
            InpLevelsIndent, levelsIndent1);
      } 
      
   }
//---
}
//+------------------------------------------------------------------+
//| 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 startBar, calculated, toCopy;
//---
   if ( rates_total < minRequiredBars ) {
      Print("Not enough bars for calculation.");
      return(0);
   }
//---
   calculated = BarsCalculated(oscHandle);
   if ( calculated < rates_total ) {
      Print("Not all data of oscHandle is calculated (", calculated, " bars. Error #", GetLastError());
      return(0);
   }
//---
   if ( prev_calculated > rates_total || prev_calculated <= 0 ) {
      startBar = minRequiredBars;
      toCopy = rates_total;
   } else {
      startBar = prev_calculated - 1;
      toCopy = rates_total - prev_calculated;
      if ( prev_calculated > 0 ) {
         toCopy += 1;
      }
   }
//---
   if ( CopyBuffer(oscHandle, 0, 0, toCopy, ExtBuffer1) <= 0 ) {
      Print("Getting Oscillator is failed. Error #", GetLastError());
      return(0);
   }
//---
   if ( InpLevelsMode != CONST_VALUE_MODE ) { //!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
      SimpleMAOnBuffer(rates_total, prev_calculated, oscPeriod1+levelsPeriod, levelsPeriod, ExtBuffer1, ExtBuffer2);
   }
//---   
   for ( int bar = startBar; bar < rates_total; bar++ ) {
      double value, sum = 0.0, sum1 = 0.0;
      double middleLine, indent, indent1;
      //---
      switch ( InpLevelsMode ) {
         case MA_MODE:
            middleLine = ExtBuffer2[bar];
            indent = levelsIndent;
            indent1 = levelsIndent1;
            break;
         case BB_MODE:          //просмотреть формулу
            middleLine = value = ExtBuffer2[bar];
            for ( int i = bar - levelsPeriod + 1; i <= bar; i++ ) {
               sum += MathPow(ExtBuffer1[i]-value, 2);
            }
            indent = levelsIndent * MathSqrt(sum/levelsPeriod); 
            for ( int k = bar - levelsPeriod1 + 1; k <= bar; k++ ) {
               sum1 += MathPow(ExtBuffer1[k]-value, 2);
            }
            indent1 = levelsIndent1 * MathSqrt(sum/levelsPeriod1);            
            break;
         case CONST_VALUE_MODE:
         default:
            middleLine = ExtBuffer2[bar] = midValue;
            indent = levelsIndent;
            indent1 = levelsIndent1;
            break;
      }
      //---
      switch ( InpDrawMode ) {
         case LINE:
            ExtBuffer3[bar] = middleLine + indent; //Upper
            ExtBuffer4[bar] = middleLine - indent1; //Lowe
            break;
         case FILLING:
            ExtBuffer3[bar] = middleLine;
            ExtBuffer4[bar] = middleLine + indent;
            ExtBuffer5[bar] = middleLine - indent1;
            break;
         case HISTOGRAM:
            if ( ExtBuffer1[bar] >= ExtBuffer2[bar] ) {
               ExtBuffer3[bar] = 0;
            } else {
               ExtBuffer3[bar] = 1;
            }
            ExtBuffer4[bar] = middleLine;
            ExtBuffer5[bar] = middleLine + indent;
            ExtBuffer6[bar] = middleLine - indent1;
            break;
      }
   }
//--- return value of prev_calculated for next call
   return(rates_total);
}
//+------------------------------------------------------------------+

What kind of error here? I haven't seen this kind of error for a couple of builds.

         case BB_MODE:
            middleLine = value = ExtBuffer2[bar];
            for ( int i = bar - levelsPeriod + 1; i <= bar; i++ ) {
               sum += MathPow(ExtBuffer1[i]-value, 2);
2020.02.05 10:56:13.220 Core 1 2017.11.01 00:00:00 array out of range in 'Oscillator For BBS.mq5' (308,41)

 
Aleksandr Prishenko:

What's the error here? I haven't seen an error like this for a couple of builds.

2020.02.05 10:56:13.220 Core 1 2017.11.01 00:00:00 array out of range in 'Oscillator For BBS.mq5' (308,41)

А... I see...

Well it's not related to updates probably. Have to figure out why.....

 
Vladislav Andruschenko:

А... I see...

Well, it's probably not related to the updates. Gotta figure out why.....

It's been working for over 5 years)) The code hasn't changed.)

 
Aleksandr Prishenko:

It's been working for over 5 years)) The code hasn't changed)

It doesn't follow at all that the errors are due to platform updates. You're out of the array.

 
Evgeny Potapov:

Hello!

I want to run some MT4 with a batch file.

Can you please tell me how to do this and why my code doesn't work:

At best it runs a few MT4s, then hangs.

Of course there is no shortage of RAM.

Moreover, I tried it on different computers

Is the portable mode key required by any chance?

Does it start all the terminals manually?

 
Alexey Viktorov:

Roman, this is the second time you have fallen for a basic unwillingness to read the documentation.

And in the mql4 documentation, if memory serves me correctly, it was clearly stated that variables should not be used as an array size.

Not quite the same, but thanks for quoting the docs anyway.

 
Koldun Zloy:

I'm not a developer, but I'll comment.

For a static array, the compiler has to allocate a certain number of bytes in memory at compile time.

How much memory should the compiler allocate if row and col are unknown at compile time?

Initial values are only used if parameters are omitted when calling. The actual parameters are only known at runtime.

So, no gimmicks, learn the language.

That sounds about right, thank you, I had the same thought in mind.
The C examples are exactly what I'm guided by.

int N, M;
int i, j;
scanf("%d", &N);
scanf("%d", &M);

int A[N][M];
for (i = 0; i < N; i++) { 
   for (j = 0; j < M; j++) {
      A[i][j] = 10 + rand() % (20 - 10 + 1);
      printf("%d ", A[i][j]);
   }
}

puts("\n");

But apparently modern compilers have become stricter.
I checked this code in VS and it also complains of unallocated array memory.
Perhaps this sample is intended for other compilers, or is it obsolete and depends on the language standard?

 

There are now three icons in the mql5.com page header next to the profile button:

1.Favorites

2. feed

3. Messages

Please add another icon, something like:

4. Money

where the amount of all funds received during the day (market, freelance, etc.) would be displayed, it would be very convenient, and now for this you have to go to the profile to see the available balance.

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