Trend look back

GrumpyDuckMan 2018.02.10 05:56

Hello everyone,

I just started this code today, but I'm having some problems understanding the error message. "could be one of 3 function(s)" isn't particularly helpful.

Some ideas please.

void Draw_Trendline()
  {

   datetime StartDate=TimeLocal();
   datetime FinishDate=TimeLocal();

   PriceClose = CopyClose(Symbol(),Period(),0, 100, ClosePriceArray);
   PriceOpen  = CopyOpen(Symbol(),Period(), 0, 100, OpenPriceArray);
   Copy       = CopyTime(Symbol(),Period(),0,100,StartDate,FinishDate,DateArray); // could be one of 3 function(s)

   ObjectCreate(0,Trend,OBJ_TREND,0,StartDate,ClosePriceArray[0],FinishDate,OpenPriceArray[99],0,0);
   ObjectSetInteger(Chart_ID,Trend,OBJPROP_COLOR,clrBlue);
   ObjectSetInteger(Chart_ID,Trend,OBJPROP_WIDTH,1);
   ObjectSetInteger(Chart_ID,Trend,OBJPROP_BACK,false);
   ObjectSetInteger(Chart_ID,Trend,OBJPROP_SELECTABLE,false);
   ObjectSetInteger(Chart_ID,Trend,OBJPROP_SELECTED,false);
   ObjectSetInteger(Chart_ID,Trend,OBJPROP_RAY_RIGHT,false);
   ObjectSetInteger(Chart_ID,Trend,OBJPROP_HIDDEN,false);
   ObjectSetInteger(Chart_ID,Trend,OBJPROP_ZORDER,false);

  }

SanjayBalraj 2018.02.10 08:27 #1

GrumpyDuckMan:

Hello everyone,

I just started this code today, but I'm having some problems understanding the error message. "could be one of 3 function(s)" isn't particularly helpful.

Some ideas please.

http://www.learncpp.com/cpp-tutorial/4-2a-why-global-variables-are-evil/

4.2a — Why global variables are evil

www.learncpp.com

If you were to ask a veteran programmer for one piece of advice on good programming practices, after some thought, the most likely answer would be, “Avoid global variables!”. And with g…

Icham Aidibe 2018.02.10 08:53 #2

GrumpyDuckMan:

Hello everyone,

I just started this code today, but I'm having some problems understanding the error message. "could be one of 3 function(s)" isn't particularly helpful.

Some ideas please.

Syntax. You are using 7 parameters, CopyTime takes only 5.

https://www.mql5.com/en/docs/series/copytime

Documentation on MQL5: Timeseries and Indicators Access / CopyTime

www.mql5.com

The function gets to time_array history data of bar opening time for the specified symbol-period pair in the specified quantity. It should be noted that elements ordering If you know the amount of data you need to copy, it should better be done to a statically allocated buffer, in order to prevent the allocation of excessive memory. No matter...

William Roeder 2018.02.10 15:13 #3

GrumpyDuckMan: I just started this code today, but I'm having some problems understanding the error message. "could be one of 3 function(s)" isn't particularly helpful.

Perhaps you should read the manual.
CopyTime - Timeseries and Indicators Access - MQL4 Reference

Your code	Version 1	Version 2	Version 3
Copy = CopyTime( Symbol(), Period(), 0, 100, StartDate, FinishDate, DateArray ); // could be one // of 3 function(s)	int CopyTime( string symbol_name, ENUM_TIMEFRAMES timeframe, int start_pos, int count, datetime time_array[] );	int CopyTime( string symbol_name, ENUM_TIMEFRAMES timeframe, datetime start_time, int count, datetime time_array[] );	int CopyTime( string symbol_name, ENUM_TIMEFRAMES timeframe, datetime start_time, datetime stop_time, datetime time_array[] );

Your code

Version 1

Version 2

Version 3

Copy = CopyTime(
  Symbol(),
  Period(),
  0,
  100,
  StartDate,
  FinishDate,
  DateArray
); // could be one 
// of 3 function(s)

int  CopyTime(
 string          symbol_name,
 ENUM_TIMEFRAMES timeframe,  
 int             start_pos,  
 int             count,      
                            
                            
 datetime        time_array[]
);

int  CopyTime(
 string          symbol_name,
 ENUM_TIMEFRAMES timeframe,  
 datetime        start_time,
 int             count,      
                            
                            
 datetime        time_array[]
);

int  CopyTime(
 string          symbol_name,
 ENUM_TIMEFRAMES timeframe,  
                            
                            
 datetime        start_time,
 datetime        stop_time,
 datetime        time_array[]
);

GrumpyDuckMan 2018.02.11 13:02 #4

Hello again,

I realized that I tried to set too many parameters for function copytime() after I posted the thread.

Thank you posts to #2 & #3.

New comment