hello, now I need operate different period in my EA,
requirement:
1, loop in MT5 periods, like h1,h2,h3…to mn1.
2, print period in loop which working, like PERIOD_H1, PERIOD_H2…
processes like below
for (iPeriod=h1, iPeriod <=mn1, iPeriod++)
{
analyze iCCI on iPeriod; //some operations with iPeriod
Print("Current period is ",iPeriod);
}
Anyone has experience on this or paste example here? Thanks in advance.
What’s your problem actually ? It seems you started well…
You can’t do that because Chart Timeframesare not consecutive. Incrementing PERIOD_H1 (60) give 61 not PERIOD_H2 (120). You need to create appropriate functions.
MT$ Code:
/** @defgroup tf Time Frames
* A simple enumeration of time frames and related functions.
* @{ */
/** Whereas `ENUM_TIMEFRAMES` is all timeframes (supported and unsupported,) but
* it can't be incremented because it's values is number of minutes,
* (incrementing M30 would be M31 not H1.) This is a simple enumeration
* (incrementing this results in the next one.) */
enum Timeframe{ TF_CURRENT, ///< Place holder for the EA attached chart.
TF_M1, TF_M2, TF_M3, TF_M4, TF_M5, TF_M6,
TF_M10, TF_M12, TF_M15, TF_M20, TF_M30, TF_H1,
TF_H2, TF_H3, TF_H4, TF_H6, TF_H8, TF_H12,
TF_D1, TF_W1, TF_MN1};
const Timeframe TF_FIRST = TF_M1; ///< Smallest supported Timeframe.
const Timeframe TF_Last = TF_MN1; ///< Largest supported Timeframe.
#define TF_COUNT TF_MN1 /**< Number of supported Timeframe%s
* not including the @ref TF_CURRENT marker. */
// For converting between periods (as_period) and timeframes (as_timeframe.)
/// @cond Skip
const ENUM_TIMEFRAMES gcPeriods[]={ PERIOD_CURRENT,
PERIOD_M1, PERIOD_M2, PERIOD_M3, PERIOD_M4, PERIOD_M5, PERIOD_M6,
PERIOD_M10, PERIOD_M12, PERIOD_M15, PERIOD_M20, PERIOD_M30, PERIOD_H1,
PERIOD_H2, PERIOD_H3, PERIOD_H4, PERIOD_H6, PERIOD_H8, PERIOD_H12,
PERIOD_D1, PERIOD_W1, PERIOD_MN1};
/// @endcond
/// Convert a period to a timeframe.
Timeframe as_timeframe(ENUM_TIMEFRAMES period=PERIOD_CURRENT){
if(period == PERIOD_CURRENT) period = (ENUM_TIMEFRAMES) _Period;
Timeframe tf = TF_M1; while(gcPeriods[tf] < period) ++tf;
return tf;
}
/// Convert a timeframe to a period;
ENUM_TIMEFRAMES as_period(Timeframe tf){ return gcPeriods[tf]; }
/** Returns the next larger timeframe. Larger timeframes should be 5 times
* larger (approximately,) but M5 to M15 is 3, and M15 to M30 and M30 to H1 is
* only 2. So for those I skip two sizes. H1 to H4 is 4 so I allow that. */
Timeframe larger(Timeframe tf){
static const Timeframe larger[] = { WRONG_VALUE,
// TF_M1, TF_M2, TF_M3, TF_M4, TF_M5, TF_M6,
TF_M5, TF_M10, TF_M15, TF_M20, TF_M30, TF_M30,
// TF_M10, TF_M12, TF_M15, TF_M20, TF_M30, TF_H1,
TF_H1, TF_H1, TF_H1, TF_H2, TF_H2, TF_H4,
// TF_H2, TF_H3, TF_H4, TF_H6, TF_H8, TF_H12,
TF_H12, TF_H12, TF_D1, TF_D1, TF_D1, TF_D1,
// TF_D1, TF_W1, TF_MN1
TF_W1, TF_MN1, WRONG_VALUE};
return larger[tf];
}
ENUM_TIMEFRAMES next_larger(ENUM_TIMEFRAMES period){
return as_period(as_timeframe(period) + 1);
}
// defgroup tf Time Frames
/// @}
Just mindmap, my problem is transfer it to real code in mql5. 
Thanks your code first, could you please provide code in mql5?
ENUM_TIMEFRAMES periods[22]={ PERIOD_CURRENT, PERIOD_M1, PERIOD_M2,
PERIOD_M3, PERIOD_M4, PERIOD_M5,
PERIOD_M6, PERIOD_M10, PERIOD_M12,
PERIOD_M15, PERIOD_M20, PERIOD_M30,
PERIOD_H1, PERIOD_H2, PERIOD_H3,
PERIOD_H4, PERIOD_H6, PERIOD_H8,
PERIOD_H12, PERIOD_D1, PERIOD_W1,
PERIOD_MN1};
for(int i=0; i<22; i++)
{
// do your analysis using periods[i]
Print("Analysed ",EnumToString(periods[i]));
}
I don’t have MT5. I gave you my code . You try to compile it and see if anything needs to change.
Yes, you can easily do this if you use an iterator class. Here is one I made for such an occasion.
Example use:
#include <TimeFrames.mqh>
void OnStart()
{
CTimeFrames tfs; // using all periods when calling the default constructor
string res = "";
for(tfs = PERIOD_H1; tfs <= PERIOD_D1;tfs++)
{
res+= tfs.ToString()+", ";
cci_func(tfs.Period());
}
Print(res);
}
You can even filter it down to only use the time-frames you select.
CTimeFrames f(FLAG_M1|FLAG_M5|FLAG_H1|FLAG_D1); //filtered time-frames using parameterized constructor
//you could have also call the SetPeriodsByFlags method
//f.SetPeriodsByFlags(FLAG_M1|FLAG_M5|FLAG_H1); //set timeframes by flags
Print(f.AllToString());
f+= PERIOD_M15; // add a time-frame to list
Print("Added time-frame ",f.ToString());
f=PERIOD_H1;
Print("Changed time-frame to ",f.ToString());
res = "";
for(f.GetFirst();!f.Last();f.Next()) //iterate forward over all time-frames in list
res+= f.ToString()+", ";
Print(res);
res="";
for(f.GetLast();!f.First();f.Prev()) //iterate backward over all time-frames in list
res+=f.ToString()+", ";
Print(res);
Files:
TimeFrames.mqh 8 kb
TF_Iterate.mq5 2 kb
Thank you, I have solved it already, thank you again.
your reply very helpful to me,thanks your code. additionally, do you have any idea about period loop? like start from PERIOD_H1 and analyze some symbol info, if failed then escalate to the next, till all conditions are meet.
Great! your answer and code satisfied my requirements.
I will study/test it, thank you so much.