جنوری 2, 2014
کی طرف سے پوسٹ کیا گیا: فاریکس وکی ٹیم
قسم: ماہر مشیر

نام:

New bar event in EA

مصنف:

symr (2011.07.01 16:45)

درجہ بندی:

ڈاؤن لوڈ کیا گیا۔:

2839

ڈاؤن لوڈ کریں:

ea_symr_newBar.mq4 (2.6 Kb) دیکھیں

So many people wants:

How to detect new bar present.

It is so simple especially if u want detect new bar in current timeframe,

void start(){
  static datetime tmp;
  اگر (tmp!= Time[0]) {
    tmp =  Time[0];
    //do ur code here
  }
}

but what about the other timeframe event? It is not too hard but it has some restriction:

MT4 is not support onBar event, but u can put the upward times into array and check the array times every tick, if it reached the right time, execute the new bar event.
That means if u run eg.: backtest on M5 timeframe u can catch the M6 M7...D1 events.
Why u can detect only upward trends? The answer is a question: how to generate tick data by metatrader? A1, A2, A3,...

Until the D1 timeframe its more difficult because the week starting at eg.: اتوار 20:45 (Broker specific) and the start of the month can start in the middle of the week... وغیرہ.
I think this info isnt too relevant, so i dont publish it...

So there is a topic for this Q, but i think so many people dont read the articles and forums, so i published this code.

Some explanation:

in the init function u fill the time array with the starter times :

  curIndex = utils.periodToPeriodIndex(مدت());
  times[curIndex] = Time[0];
  کے لیے(int i=curIndex+1; میں<MAX; i++)
    times[میں] = times[curIndex]- MathMod(times[curIndex],utils.periodIndexToPeriod(میں)*60);

and in the start function u checked is there enough time elapsed now, then execute the event

  اگر (times[curIndex] != Time[0]) {
    times[curIndex] = Time[0];
    onBar(مدت());
    کے لیے(int i=curIndex+1; میں<MAX; i++) {
      int period  = utils.periodIndexToPeriod(میں),
          seconds = period*60,
          time0   = times[curIndex] - MathMod(times[curIndex],seconds);
      اگر (times[میں] != time0) {
        times[میں] = time0;
        onBar(period);
      }
    }
  }

Write ur code in

void onTick() { 
}

اور

void onBar(int period) {
}

That's all folks.

اپ ڈیٹ 1.1: Thx to WHRoeder for clear code

5 تبصرے ایک نیا تبصرہ پوسٹ کرنے کے لیے, برائے مہربانی لاگ ان کریں یا رجسٹر کریں

Why don't you just use the iTime function?

http://docs.mql4.com/series/itime

27.11.2012 10:48 Master.Aurora

Why not use iTime("EURUSD",PERIOD_M1,0)

جیسے.

اگر(New_Time_M1 != iTime("EURUSD",PERIOD_M1,0)) // Compare time --> new bar is born
{
New_Time_M1=iTime("EURUSD",PERIOD_M1,0); // New time set
New_Bar_M1=true; // A new bar detected

}

07.07.2011 22:44 alexander_zde

WHRoeder:

times[curIndex]-(MathMod(times[curIndex]/60,utils.periodIndexToPeriod(میں)))*60

for efficiency and readability, simplify

times[curIndex]- MathMod(times[curIndex],utils.periodIndexToPeriod(میں)*60);

for efficiency and readability and to avoid unnecessary function calls, I'd replace the functions with an array and save results

int utils.periodIndexToPeriod   = {
    PERIOD_M1,  PERIOD_M5,  PERIOD_M15, PERIOD_M30, PERIOD_H1,  PERIOD_H4,
    PERIOD_D1,  PERIOD_W1,  PERIOD_MN1, 20,         50  };

کے لیے(int i=curIndex+1; میں<MAX; i++)
    int period  = utils.periodIndexToPeriod[میں];
        seconds = period*60,
        time0   = times[curIndex] - MathMod(times[curIndex],seconds);
    اگر (times[میں] != time0) {
        times[میں] = time0;
        onBar(period);
}   }

And avoid unnecessary function calls with the simpler
```
times[curIndex] = Time[0]; // = iTime(NULL,0,0);
```

Thanks for this I am trying with custom timerames, if I set it up for a 3 hour candle for example eg 180 منٹ. When does this time start to count? eg form midnight every 3 hours or does it depend when the indicatoe is placed on the chart?

ایک بار پھر شکریہ

05.07.2011 17:04 manuel_fx

ہائے.

thx for this ideas, ur right.

1. Accessing the arrays is more faster than use switch - case element. (in this example 4 times), some test:

  start = GetTickCount();

  کے لیے(test=0; test<10000000; test++)
   کے لیے(i=0; میں<MAX; i++)
    int value1 = utils.periodIndexToPeriod[میں];

  log("Elapsed : " + (GetTickCount()-start)); // 2100 ms

  start = GetTickCount();

  کے لیے(test=0; test<10000000; test++)
   کے لیے(i=0; میں<MAX; i++)
    int value2 = utils2.periodIndexToPeriod(میں);

  log("Elapsed : " + (GetTickCount()-start)); // 8000 MS

but how accsess this 10.000.000*MAX in a row? 😀 and i think much more readble switch - case options beacuse it is more similar the other rutins. Easily readable by someone who not a coder.

2. use local variable in loop save some times but not so much i think so test it: in half year backtest, where do some loop in onBar event, ur code done in 6006ms, my 5990ms on ~ 72Kbar event so its same

3. وقت[0] / iTime(NULL,0,0) does not affect the result.

So i change the loop code for ur versions (more readable), but not change the array access rutin. btw thx a lot, i swear i will not publish a code, کے بعد 2 ہوں, when i am too tired 😛

01.07.2011 20:27 symr

times[curIndex]-(MathMod(times[curIndex]/60,utils.periodIndexToPeriod(میں)))*60

for efficiency and readability, simplify

times[curIndex]- MathMod(times[curIndex],utils.periodIndexToPeriod(میں)*60);

for efficiency and readability and to avoid unnecessary function calls, I'd replace the functions with an array and save results

int utils.periodIndexToPeriod   = {
    PERIOD_M1,  PERIOD_M5,  PERIOD_M15, PERIOD_M30, PERIOD_H1,  PERIOD_H4,
    PERIOD_D1,  PERIOD_W1,  PERIOD_MN1, 20,         50  };

کے لیے(int i=curIndex+1; میں<MAX; i++)
    int period  = utils.periodIndexToPeriod[میں];
        seconds = period*60,
        time0   = times[curIndex] - MathMod(times[curIndex],seconds);
    اگر (times[میں] != time0) {
        times[میں] = time0;
        onBar(period);
}   }

And avoid unnecessary function calls with the simpler
```
times[curIndex] = Time[0]; // = iTime(NULL,0,0);
```

function calls New bar event

مصنف: فاریکس وکی ٹیم

ہم انتہائی تجربہ کار فاریکس ٹریڈرز کی ایک ٹیم ہیں۔ [2000-2023] جو ہماری اپنی شرائط پر زندگی گزارنے کے لیے وقف ہیں۔. ہمارا بنیادی مقصد مالی آزادی اور آزادی حاصل کرنا ہے۔, اور ہم نے خود تعلیم حاصل کی ہے اور خود کو پائیدار طرز زندگی حاصل کرنے کے اپنے ذرائع کے طور پر فاریکس مارکیٹ میں وسیع تجربہ حاصل کیا ہے۔.

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New bar event in EA

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