PlotIndexSetInteger concern

[Kevan Wells]

The term in my EA 'if(CopyBuffer(handle,1,0,10,zm)<0)' works as expected and returns valid array variables.

When I attempt to shift the plot in my custom indicator using 'PlotIndexSetInteger(1,PLOT_SHIFT,10)' to show a future prediction, the term in my EA returns unitialised array values.

Any ideas how to resolve this other than by having a second array which is not shifted.

[Alexey Da]

winston:

The term in my EA 'if(CopyBuffer(handle,1,0,10,zm)<0)' works as expected and returns valid array variables.

When I attempt to shift the plot in my custom indicator using 'PlotIndexSetInteger(1,PLOT_SHIFT,10)' to show a future prediction, the term in my EA returns unitialised array values.

Any ideas how to resolve this other than by having a second array which is not shifted.

Read this topic https://www.mql5.com/en/docs/series/copybuffer

On error function CopyBuffer will return -1 and set LastError is not zero value.

It is small positive example for you

int OnStart()
  {
   int h1=iMA(_Symbol,_Period,13,0,MODE_EMA,PRICE_CLOSE);
   int h2=iMA(_Symbol,_Period,13,10,MODE_EMA,PRICE_CLOSE);
   if(h1!=INVALID_HANDLE && h2!=INVALID_HANDLE)
     {
      double a1[],a2[];
      int cp1=CopyBuffer(h1,0,0,1,a1);
      int cp2=CopyBuffer(h2,0,-10,1,a2);
     }
//---
   return(0);
  }