newbie question - volume indicator

[mosari]

Hi there. I like to have the moving average of the volume. I have write this lines of codes but it always get me the moving average of closing price. What is my coding problem? I have copied here the OnInit and OnCalculate  functions only. I have write and compiled the whole indicator correctly. I have even test it on volume indicator and set parameter of my own indicator to "first indicator in the list" but nothing changed.

double         test01Buffer[];

int SmoothHandle,RSIHandle;



int OnInit()

  {



   SetIndexBuffer(0,test01Buffer,INDICATOR_DATA);

   SmoothHandle = iMA(NULL, 0, period, 0, MODE_EMA, VOLUME_REAL);

 

return(INIT_SUCCEEDED);

  }



int OnCalculate (const int rates_total,      // the size of the price[] array

                 const int prev_calculated,  // bars calculated in the previous call

                 const int begin,            // where notional data start from

                 const double& price[]       // data array for calculation

                 )

  {

   int toCount=(int)MathMin(rates_total,rates_total-prev_calculated+1);

  CopyBuffer(SmoothHandle,0,0,toCount,test01Buffer);

  return(rates_total);

  }

[Carl Schreiber]

Why do you try it yourself?

E.g. here in this article: https://www.mql5.com/en/articles/5703 you find a small discussion of several Volume indicators.

And if you search (top right) for volume and click on CodeBase you'll find 80 Pages each with 10 suggestion..

I am quite sure there is what you are trying...

[mosari]

thank you dear Carl. I will check this link and find out how I can solve this problem. But anyway is there any problem in my lines of code that it doesn't work? 

[mosari]

I found out. iMA function only works with ENUM_APPLIED_PRICE. To make a moving average of volume we should create a handle of volume with iVolumes and then use it with iMA to create the moving average of it.