How do I create an array of indicator values? - MQL4 and MetaTrader 4

Sergey Dzyublik 2013.11.13 07:47 #2511

lottamer:

i looked at it. it will take me a week to study it in details. but what's worse, i couldn't find any places that would be relevant to my task. i don't color indicators, and i don't modify them in any way. i just want to find maxima and minima on n-last bars. there's a hint of similarity in RSI_Extremums_Sample.mq4 but i can't handle this code. it's too much unnecessary, the indicator DRAWNS.... and i don't need it...

3173

artmedia70 27.10.2013 15:42 #

Forexman77:

Is it possible with the " ArrayMaximum" function, to calculate the nearest maximum of a custom indicator?

Or do I need other functions for that?

I have tried it this way:

And nothing comes out. Gurus, can you tell me how to do it?

   for (i=2; i<nBars; i++) {                    
      double a=iCustom(NULL, 0, "EMAF",0,0,i+1);
      double b=iCustom(NULL, 0, "EMAF",0,0,i);
      double c=iCustom(NULL, 0, "EMAF",0,0,i-1);
      if ((a-b)*(b-c)<0) {
         if (b<c) {                                
            // Нашли донышко
            }
         if (b>c) {                           
            // Нашли пичок
            }
         }
      }

To search in the EA. NOT in an indicator.

Alekseu Fedotov 2013.11.13 07:48 #2512

lottamer:

The only thing I don't understand is how to calculate extrema of the MACD indicator, for example, instead of extrema of the price over n periods ?

I think I need to change HIGH and LOW to MACD in the key block... But I don't understand how ... all my attempts to goof around ended in nulling.

I understand that I need to create a MACD array...

double MACDBuffer[];

I've also seen such a string in other Expert Advisors

but I can't just measure one on the other...

Please, advise how to do it?

Article.

elllfix 2013.11.13 08:38 #2513

found something similar in Kim's

//+----------------------------------------------------------------------------+
//|  Автор    : Ким Игорь В. aka KimIV,  http://www.kimiv.ru                   |
//+----------------------------------------------------------------------------+
//|  Версия   : 17.05.2008                                                     |
//|  Описание : Возвращает значение максимального элемента массива.            |
//+----------------------------------------------------------------------------+
//|  Параметры:                                                                |
//|    x - массив значений числового ряда                                      |
//+----------------------------------------------------------------------------+
double ArrayMax(double& x[]) {
  if (ArraySize(x)>0) return(x[ArrayMaximum(x)]);
  else {
    Print("ArrayMax(): Массив пуст!");
    return(0);
  }
}

question: how do I create an array of indicator values?

Sergey Dzyublik 2013.11.13 08:47 #2514

lottamer:

found something similar in Kim's

Question: how do I create an array of indicator values?

i reread what was asked, i got it wrong at first (

to get a buffer of indicator data, you can

1) run a loop with collecting iMACD values in the buffer

2) take the source code from the MACD, there is a buffer there

int start()
  {
   int limit;
   int counted_bars=IndicatorCounted();
//---- last counted bar will be recounted
   if(counted_bars>0) counted_bars--;
   limit=Bars-counted_bars;
//---- macd counted in the 1-st buffer
   for(int i=0; i<limit; i++)
      MacdBuffer[i]=iMA(NULL,0,FastEMA,0,MODE_EMA,PRICE_CLOSE,i)-iMA(NULL,0,SlowEMA,0,MODE_EMA,PRICE_CLOSE,i);
//---- signal line counted in the 2-nd buffer
   for(i=0; i<limit; i++)
      SignalBuffer[i]=iMAOnArray(MacdBuffer,Bars,SignalSMA,0,MODE_SMA,i);
//---- done
   return(0);
  }

Indicator can access buffers Questions from Beginners MQL5 Trading Decisions for EA

elllfix 2013.11.13 09:11 #2515

ALXIMIKS:

reread what was asked, got it wrong at first(

To get a buffer with the data of an indicator you can:

1) run a loop with collecting iMACD values in the buffer

2) take the source code from the MACD where the buffer is

How do I visualize the buffer, otherwise I don't understand what to do with it....

Print(MACDBuffer[1]); ?? it prints zero... why? in theory it should be the value of the 1st bar....

and another thing... why calculate MACD using MA when there is a direct function iMACD ???

FOREX - Trends, forecasts Questions from Beginners MQL4 Fractal indicator

Sergey Dzyublik 2013.11.13 09:27 #2516

lottamer:

and how do i visualise the buffer otherwise i don't understand what to do with it....

Print(MACDBuffer[1]); ?? it prints zero...why? it should be the value of the 1st bar....

and another thing... why calculate MACD using MA, when there is a direct function iMACD ???

Please tell me what you need,

but it should be clearer, so that even a dumb person can understand it.

elllfix 2013.11.13 09:50 #2517

ALXIMIKS:

Please tell me what you want,

but in a clear way, so that even the dumb one understands.

I need to determine the minimum (as on the picture) and maximum values of the MACD indicator for a given number of bars. (20 in this case).

I found the code that does this for the price, and stupidly tried to replace HIGH LOW with MACD. but nothing worked....

Any questions from newcomers Find indicators last cross Questions from Beginners MQL5

timofey 2013.11.13 10:37 #2518

artmedia70:
It is the job of the DCs to give a good story. They are lazy and always blame the MCs.

Thank you!

Sergey Dzyublik 2013.11.13 10:40 #2519

lottamer:

I need to determine the minimum (as shown in the picture) and maximum MACD indicator value for a given number of bars. (20 in this case).

I found a code that does this for price, and stupidly tried to replace HIGH LOW with MACD. but nothing worked....

Insert at the end of the custom MACD.

   int max,min,maxlast,minlast;
   max = ArrayMaximum(MacdBuffer,20,1);
   min = ArrayMinimum(MacdBuffer,20,1);
   if (max!=maxlast){
      ObjectDelete  ("highline");   
      ObjectCreate  ("highline",1,WindowOnDropped( ) ,0,MacdBuffer[max],0,0);
   }
   if (min!=minlast){
      ObjectDelete  ("lowline");   
      ObjectCreate  ("lowline",1,WindowOnDropped( ) ,0,MacdBuffer[min],0,0);
   }

PS. although this is more correct and better:

   int max,min;
   static double maxlast,minlast;
   max = ArrayMaximum(MacdBuffer,20,1);
   min = ArrayMinimum(MacdBuffer,20,1);
   if (MacdBuffer[max]!=maxlast){
      maxlast=MacdBuffer[max];
      ObjectDelete  ("highline");   
      ObjectCreate ("highline",1,WindowOnDropped( ) ,0,MacdBuffer[max],0,0);
   }
   if (MacdBuffer[min]!=minlast){
      minlast=MacdBuffer[min];
      ObjectDelete  ("lowline");   
      ObjectCreate ("lowline",1,WindowOnDropped( ) ,0,MacdBuffer[min],0,0);
   }

Artyom Trishkin 2013.11.13 10:57 #2520

lottamer:

I need to determine the minimum (as shown in the picture) and maximum MACD indicator value for a given number of bars. (20 in this case).

I found a code that does this for price, and stupidly tried to replace HIGH LOW with MACD. but nothing worked....

Copy the MACD data you need into massMACD[20] array and find the minimum ArrayMinimum(massMACD); and
maximum ArrayMaximum(massMACD); values in that array.

Any rookie question, so as not to clutter up the forum. Professionals, don't pass by. Nowhere without you - 6. - page 252