How to calculate the price of a Japanese stock - MQL4 and MetaTrader 4

psyman 2018.10.20 01:47 #6721

After the last answers the picture became clearer and the most obvious one is that I am not destined to become a programmer :-)

So far I started with the simplest listing and this is what it turned out to be:

2018.10.20 08:42:43.343 _t1 CADJPY,Daily: tmp1[4] = 86.0999999999999999 2018.10.15 00:00:00

2018.10.20 08:42:43.343 _t1 CADJPY,Daily: tmp1[3] = 85.989999999999999999 2018.10.16 00:00:00

2018.10.20 08:42:43.343 _t1 CADJPY,Daily: tmp1[2] = 86.76000000000001 2018.10.17 00:00:00

2018.10.20 08:42:43.343 _t1 CADJPY,Daily: tmp1[1] = 86.5 2018.10.18 00:00:00

2018.10.20 08:42:43.343 _t1 CADJPY,Daily: tmp1[0] = 85.72 2018.10.19 00:00:00

In some cases, for some reason, the price exceeds the dimension of two significant digits after the point in either direction.

And this happens without any errors in calculations, it's just the output of the price value from the chart base tmp1[i]=close[i];

Is there any way to fix it or just ignore it?

Reversal Magic trading system Simple recovery loss in Backtesting with tick data

psyman 2018.10.20 02:01 #6722

You can remove everything from it that's relevant to five, and get a template for four.

This can be written by someone who knows the difference between a five and a four, and it's definitely not me :-)

//--- Проверка количества доступных баров
   if(rates_total<fmax(period_ma,4)) return 0;

Where did the number 4 come from, what is its sacred meaning?

[WARNING CLOSED!] Any newbie Interesting topic for many: How do I check

Artyom Trishkin 2018.10.20 03:53 #6723

psyman:

This can be written by someone who knows the difference between a five and a four, and it's definitely not me :-)

Where did the number 4 come from, what sacred meaning does it have?

You certainly don't listen or read... I was:

Forum on trading, automated trading systems & strategy testing

Any MQL4 beginners questions, assistance and discussion on algorithms and codes

Artyom Trishkin, 2018.10.18 09:26

//+------------------------------------------------------------------+
//| 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[])
  {
//--- Проверка количества доступных баров (1 - минимально, 4 - оптимально для большинства расчётов. Но всё "по месту"...)
   if(rates_total<4) return 0;
//--- Проверка и расчёт количества просчитываемых баров
   int limit=rates_total-prev_calculated; // 0 - пришел новый тик, новый бар формироваться не начал. 1 - пришел новый тик и начал формироваться новый бар.
   if(limit>1) 
               // если вписать "limit>0", то на нулевом баре будет расчёт только нулевого бара, на каждом новом баре будет полный перерасчёт всей истории
               // если вписать "limit>1", то на нулевом баре будет расчёт только нулевого бара, на открытии нового бара - пересчёт первого и нулевого,
               // при подгрузке истории и на первом запуске - перерасчёт всей истории
     {
      limit=rates_total-1;
      // здесь должна быть инициализация всех используемых буферов индикатора необходимыми значениями (обычно EMPTY_VALUE и 0)
     }
//--- Расчёт индикатора
   for(int i=limit; i>=0 && !IsStopped(); i--)
     {
      // необходимые действия по расчёту индикатора
     }

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

Questions from Beginners MQL4 Errors, bugs, questions Questions from Beginners MQL5

Artyom Trishkin 2018.10.20 03:56 #6724