We do I need to switch TF to show the indicator?

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Hi guys,

sometime I need to change TF to show the indicator.

It seems it does not load or laod partially. 
Should I preload in On init function or what?
I am struggling with this issue. Any tips?

 
Thats a bug, have the same problem 
 
Do you really expect an answer with the information you've provided? There are no mind readers here and our crystal balls are cracked. We can't see your broken code.
 
William Roeder:
Do you really expect an answer with the information you've provided? There are no mind readers here and our crystal balls are cracked. We can't see your broken code.

some example:


//+------------------------------------------------------------------+
//|                                                      SpreadT.mq5 |
//|                        Copyright 2020, MetaQuotes Software Corp. |
//|                                             https://www.mql5.com |
//+------------------------------------------------------------------+
#property copyright "Copyright 2020, MetaQuotes Software Corp."
#property link      "https://www.mql5.com"
#property version   "1.00"
#property indicator_separate_window
#property indicator_buffers 3
#property indicator_plots   3
//--- plot Label1
#property indicator_label1  "Label1"
#property indicator_type1   DRAW_LINE
#property indicator_color1  clrRed
#property indicator_style1  STYLE_SOLID
#property indicator_width1  1
//--- plot Label2
#property indicator_label2  "Label2"
#property indicator_type2   DRAW_LINE
#property indicator_color2  clrRed
#property indicator_style2  STYLE_SOLID
#property indicator_width2  1
//--- plot Label3
#property indicator_label3  "Label3"
#property indicator_type3   DRAW_LINE
#property indicator_color3  clrRed
#property indicator_style3  STYLE_SOLID
#property indicator_width3  1
#include <Trade\SymbolInfo.mqh>

//--- indicator buffers
double         Label1Buffer[];
double         Label2Buffer[];
double         Label3Buffer[];
MqlRates rates1[],rates2[];
int Dstart=0;
double ratio=1;
input string currency2="GBPUSD";
//+------------------------------------------------------------------+
//| Custom indicator initialization function                         |
//+------------------------------------------------------------------+
int OnInit()
  {
//--- indicator buffers mapping
   SetIndexBuffer(0,Label1Buffer,INDICATOR_DATA);
   SetIndexBuffer(1,Label2Buffer,INDICATOR_DATA);
   SetIndexBuffer(2,Label3Buffer,INDICATOR_DATA);

   int op=Bars(currency2,Period());
   CSymbolInfo m_symbol();
   m_symbol.Name(Symbol()); // sets symbol name
   m_symbol.RefreshRates();
   double t1=m_symbol.Bid();
   m_symbol.Name(currency2); // sets symbol name
   m_symbol.RefreshRates();
   double t2=m_symbol.Bid();
   ratio=t1/t2;
   Print("Ratio:"+ratio);
//---
   return(INIT_SUCCEEDED);
  }
//+------------------------------------------------------------------+
//| 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 limit;
   if(prev_calculated==0)
      limit=0;
   else
      limit=prev_calculated-1;

   MqlDateTime str;

   ResetLastError();
   for(int i=limit; i<rates_total && !IsStopped(); i++)
     {

      //TimeToStruct(time[limit],str);

      datetime start=time[i];
      datetime end=time[rates_total-1];
      int copied2,copied;

      int op=Bars(currency2,Period(),start,end);
      copied2=CopyRates(currency2,Period(),start,1,rates2);
      
      if(copied2<1 && i>1)
        {
         //Print("0 copied");
         
        // Label1Buffer[i]=Label1Buffer[i-1];
        // Label2Buffer[i]=Label1Buffer[i];
        // Label3Buffer[i]=Label1Buffer[i];
         //Print(__FUNCTION__+", Error Code = ",GetLastError());
         continue;
        }
        else if( ArraySize(rates2)==0)
        {
        //  Print("0 rates2 size");
         continue;
        }
         else if(rates2[0].close ==0)
        {
       //   Print("rates2[0].close==0");
         continue;
        }

      else
        {
         if(prev_calculated==0 && i==limit)
           {
            //ArrayFill(Label1Buffer,0,rates_total,close[i]/rates2[0].close);
            //ArrayFill(Label2Buffer,0,rates_total,close[i]);
            //ArrayFill(Label3Buffer,0,rates_total,close[i]);
           }
         //Print(__FUNCTION__+", Error Code = ",GetLastError());
         //Label2Buffer[i]=rates2[0].close;
         Label1Buffer[i]=close[i]/(ratio*rates2[0].close);
         Label2Buffer[i]=Label1Buffer[i];
         Label3Buffer[i]=Label1Buffer[i];
         //if(GetLastError()!=0)
         //   Print(__FUNCTION__+"c:"+i+", Error Code = ",GetLastError());
         
        }



     }
//--- return value of prev_calculated for next call
   return(rates_total);
  }
//+------------------------------------------------------------------+





//+------------------------------------------------------------------+
//|                                                         LRCh.mq5 |
//|                                                      Vladimir M. |
//|                                                mikh.vl@gmail.com |
//+------------------------------------------------------------------+
#property copyright "Vladimir M."
#property link      "mikh.vl@gmail.com"
#property version   "1.00"

#property description "Linear Regression Channel"
#property indicator_chart_window
#property indicator_buffers 5
#property indicator_plots   5
#property indicator_type1   DRAW_LINE
#property indicator_type2   DRAW_LINE
#property indicator_type3   DRAW_LINE
#property indicator_type4   DRAW_LINE
#property indicator_type5   DRAW_LINE
#property indicator_style1  STYLE_SOLID
#property indicator_style2  STYLE_DOT
#property indicator_style3  STYLE_DOT
#property indicator_style4  STYLE_DOT
#property indicator_style5  STYLE_DOT
#property indicator_color1  Blue
#property indicator_color2  Yellow
#property indicator_color3  Yellow
#property indicator_color4  Red
#property indicator_color5  Red
#property indicator_applied_price PRICE_CLOSE
//--- input params
input int InChPeriod = 150; //Channel Period

int ExChPeriod,rCount;
//---- buffers
double rlBuffer[],upBuffer[],downBuffer[],highBuffer[],lowBuffer[]; 
//+------------------------------------------------------------------+
//| Custom indicator initialization function                         |
//+------------------------------------------------------------------+  
void OnInit()
  {
//--- check input variables
   int BarsTotal;
   BarsTotal=Bars(_Symbol,PERIOD_CURRENT);
   if(InChPeriod<2)
     {
      ExChPeriod=2;
      printf("Incorrect input value InChPeriod=%d. Indicator will use InChPeriod=%d.",
             InChPeriod,ExChPeriod);
     }
   else if(InChPeriod>=BarsTotal)
     {
      ExChPeriod=BarsTotal-1;
      printf("Total Bars=%d. Incorrect input value InChPeriod=%d. Indicator will use InChPeriod=%d.",
             BarsTotal,InChPeriod,ExChPeriod);
     }
   else ExChPeriod=InChPeriod;
   
   SetIndexBuffer(0,rlBuffer,INDICATOR_DATA);
   SetIndexBuffer(1,upBuffer,INDICATOR_DATA);
   SetIndexBuffer(2,downBuffer,INDICATOR_DATA);
   SetIndexBuffer(3,highBuffer,INDICATOR_DATA);
   SetIndexBuffer(4,lowBuffer,INDICATOR_DATA);
   PlotIndexSetString(0,PLOT_LABEL,"Main Line("+string(ExChPeriod)+")");
   PlotIndexSetString(1,PLOT_LABEL,"Up Line("+string(ExChPeriod)+")");
   PlotIndexSetString(2,PLOT_LABEL,"Down Line("+string(ExChPeriod)+")");
   PlotIndexSetString(3,PLOT_LABEL,"High Line("+string(ExChPeriod)+")");
   PlotIndexSetString(4,PLOT_LABEL,"Low Line("+string(ExChPeriod)+")");
  }
//+------------------------------------------------------------------+
//| Custom indicator iteration function                              |
//+------------------------------------------------------------------+
int OnCalculate(const int rates_total, const int prev_calculated, const int begin, const double &price[])
   {
    double sumX,sumY,sumXY,sumX2,a,b,F,S;
    int X;
//--- check for bars count
    if(rates_total<ExChPeriod+1)return(0);
//--- if  new bar set, calculate    
    if(rCount!=rates_total)
      {
       PlotIndexSetInteger(0,PLOT_DRAW_BEGIN,rates_total-ExChPeriod-1);
       PlotIndexSetInteger(1,PLOT_DRAW_BEGIN,rates_total-ExChPeriod-1);
       PlotIndexSetInteger(2,PLOT_DRAW_BEGIN,rates_total-ExChPeriod-1);
       PlotIndexSetInteger(3,PLOT_DRAW_BEGIN,rates_total-ExChPeriod-1);
       PlotIndexSetInteger(4,PLOT_DRAW_BEGIN,rates_total-ExChPeriod-1);
//--- calculate coefficient a and b of equation linear regression 
       F=0.0;
       S=0.0;
       sumX=0.0;
       sumY=0.0;
       sumXY=0.0;
       sumX2=0.0;
       X=0;
       for(int i=rates_total-1-ExChPeriod;i<rates_total-1;i++)
         {
          sumX+=X;
          sumY+=price[i];
          sumXY+=X*price[i];
          sumX2+=MathPow(X,2);
          X++;
         }
       a=(sumX*sumY-ExChPeriod*sumXY)/(MathPow(sumX,2)-ExChPeriod*sumX2);
       b=(sumY-a*sumX)/ExChPeriod;
//--- calculate values of main line and error F
       X=0;
       for(int i=rates_total-1-ExChPeriod;i<rates_total;i++)
         {
          rlBuffer[i]=b+a*X;
          F+=MathPow(price[i]-rlBuffer[i],2);
          X++;
         }
//--- calculate deviation S       
       S=NormalizeDouble(MathSqrt(F/(ExChPeriod+1))/MathCos(MathArctan(a*M_PI/180)*M_PI/180),_Digits);
//--- calculate values of last buffers
       for(int i=rates_total-1-ExChPeriod;i<rates_total;i++)
         {
          upBuffer[i]=rlBuffer[i]+S;
          downBuffer[i]=rlBuffer[i]-S;
          highBuffer[i]=rlBuffer[i]+2*S;
          lowBuffer[i]=rlBuffer[i]-2*S;
         }
 
        rCount=rates_total;
      }
      
    return(rates_total);
   }
//+------------------------------------------------------------------+
 
amando:
Thats a bug, have the same problem 

I dunno, I am still waiting for a tips/clarification.
This problem really bothers me

 
Marco Montemari: some example:

In both cases you use the passed arrays, and buffers, without setting as-series or not.

To determine the indexing direction of time[], open[], high[], low[], close[], tick_volume[], volume[] and spread[], call ArrayGetAsSeries(). In order not to depend on default values, you should unconditionally call the ArraySetAsSeries() function for those arrays, which are expected to work with.
          Language Basics / Functions / Event Handling Functions - Reference on algorithmic/automated trading language for MetaTrader 5
 
William Roeder:

In both cases you use the passed arrays, and buffers, without setting as-series or not.

So you mean using ArraySetAsSeries will solve my problem...Ok I will try.
Thanks for your help.

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