Simple multiplication

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Hi All!

I'm a beginner MQL4 user. There are lot of little - and smart - things dont know about it.

I'm working on an indicator. I found myself face to an interesting thing about multiplication. I show you:

This row is works well:

MD[pos] = iMA(NULL,0,13,0,0,ABS[pos],pos) ;

But this one doesnt work:

MD[pos] = iMA(NULL,0,13,0,0,ABS[pos],pos) * 0.015 ;

Please help me somebody!

Thank you.
Relative
 
Your array MD[] is of integer type?
  
double   MD[];
double   ABS[];

It is floating-point constant.
 
Put whole code.
  
#property  indicator_separate_window
#property  indicator_buffers 7
#property  indicator_color1 Yellow
#property  indicator_color2 Green
#property  indicator_color3 Blue
#property  indicator_color4 Red
#property  indicator_color5 Yellow
#property  indicator_color6 Pink
#property  indicator_color7 Tomato
 
double   EMA_CCI[];
double   CCI[];
double   TP[];
double   SMATP[];
double   MD[];
double   ABS[];
double   CCI_CALC[];
 
int ExtCountedBars=0 ;
 
int init()
  {
   SetIndexStyle(0,1);
   SetIndexStyle(1,1);
   SetIndexStyle(2,1);
   SetIndexStyle(3,1);
   SetIndexStyle(4,1);
   SetIndexStyle(5,1);
   SetIndexStyle(6,1);
 
   SetIndexBuffer(0,CCI);
   SetIndexBuffer(1,EMA_CCI);
   SetIndexBuffer(2,TP);
   SetIndexBuffer(3,SMATP);
   SetIndexBuffer(4,MD);
   SetIndexBuffer(5,ABS);
   SetIndexBuffer(6,CCI_CALC);
      
   IndicatorShortName("EMA_CCI - " );
 
   SetIndexLabel(0,"CCI");
   SetIndexLabel(1,"EMA_CCI");
   SetIndexLabel(2,"TP");
   SetIndexLabel(3,"SMATP");
   SetIndexLabel(4,"MD");   
   SetIndexLabel(5,"ABS");   
   SetIndexLabel(6,"CCI_CALC");
 
   return(0);
  }
 
int start()
  {
   if(Bars<=10) return(0);
   ExtCountedBars=IndicatorCounted();
   if (ExtCountedBars<0) return(-1);
   if (ExtCountedBars>0) ExtCountedBars--;
   int pos   = Bars-ExtCountedBars-1;
 
   while(pos>=0)
     {
 
 
 
      CCI[pos]     = iCCI(NULL,0,13,PRICE_TYPICAL,pos) ;         // - Simple CCI indicator - works fine
 
//    EMA_CCI[pos] = iMA(NULL,0,5,0,1,CCI[pos],pos) ;            // - The Main Objective: EMA(CCI(13),5) - doesnt work
 
      TP[pos]    = ( High[pos] + Low[pos] + Close[pos] ) / 3 ;   // - Starting caltulate the CCI manual
      SMATP[pos] = iMA(NULL,0,13,0,0,PRICE_TYPICAL,pos) ;
      ABS[pos]   = MathAbs( TP[pos] - SMATP[pos] );
      MD[pos]    = (iMA(NULL,0,13,0,0,ABS[pos],pos)) ;
 
//    CCI_CALC[pos] = ( TP[pos]-SMATP[pos] ) / ( MD[pos] * 0.015 ) ; - doesnt work
//    CCI_CALC[pos] = ( ABS[pos]           ) / ( MD[pos] * 0.015 ) ; - doesnt work
 
//--> CCI = ( Typical Price - SMATP ) / ( Mean Deviation x 0.015 ) - An objective - calculate manual the CCI indicator
//                                                                   Then I have discovered this formula is wrong              
 
 
 
         pos--;
     }
 
   return(0);
}
 
Relative:
      MD[pos]    = (iMA(NULL,0,13,0,0,ABS[pos],pos)) ;
What exactly are you trying to calculate here? What is ABS[pos] parameter for?

Like in most cases the code does work exactly as it's programmed. Unfortunately that doesn't necessarily mean that it works as it's supposed to. :(
 
Ok, so let's concentrate only my Main Objective, to create the Exponencial Moving Average (period 5) of the CCI (period 13) indicator.

CCI[pos]     = iCCI(NULL,0,13,PRICE_TYPICAL,pos) ;    // - Simple CCI indicator - works fine
 
EMA_CCI[pos] = iMA(NULL,0,5,0,1,CCI[pos],pos) ;       // - The Main Objective: EMA(CCI(13),5) - doesn't work
 
Relative:
SMATP[pos] = iMA(NULL,0,13,0,0,PRICE_TYPICAL,pos) ;

MD[pos]    = (iMA(NULL,0,13,0,0,ABS[pos],pos)) ;
EMA_CCI[pos] = iMA(NULL,0,5,0,1,CCI[pos],pos) ;       // - The Main Objective: EMA(CCI(13),5) - doesn't work

Again, why are you using integer constant PRICE_TYPICAL for sixth parameter in the first iMA and an element of double array in the others? What logic do you follow?

Perhaps you need to apply iMAOnArray() to the arrays instead.

Hint. Use iMAOnArray() in a separate loop as it needs fully prepared data.
 
Irtron, thank you very much your hint. This formula works well:

CCI[pos]     = iCCI(NULL,0,13,PRICE_TYPICAL,pos) ;       // - Simple CCI indicator - works fine
 
EMA_CCI[pos] = iMAOnArray(CCI,0,5,0,MODE_EMA,pos) ;      // - The Main Objective: EMA(CCI(13),5)
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