Class for drawing TEMA using ring buffer - MetaTrader 5 script | Forex indicator download - MT4/MT5 resources

The CTEMAOnRingBuffer class is designed for calculating the technical indicator Triple Exponential Moving Average ( Triple Exponential Moving Average , TEMA) using an algorithmic ring buffer .

 Class CTEMAOnRingBuffer: publicCArrayRing

title

 #include

Files of the CTEMAOnRingBuffer.mqh class must be placed in the IncOnRingBuffer folder that needs to be created in MQL5\Include\. Attached to the description are two files containing examples used by the classes in this folder. File with categories Ring Buffer , Demar and Moving Average Must be in this folder as well.

 //--- Initialization method:
boolean initialization ( // return false if error, true if success integer period = 12 , // TEMA period ENUM_MA_METHOD method = mode_EMA , // smoothing method integer buffer size = 256 , // size of ring buffer boolean as_series = false // true if time series, otherwise - false );

 //--- Calculation method based on time series or indicator buffer:
Integer MainOnArray( // Returns the number of elements processed constant integer rate_total, // the size of the array constant integer previously calculated, // the number of elements processed on the last call constant integer & prices[], // the array used for calculation );

 //--- Method for calculation based on individual series elements of an array
Double the main value ( // returns the TEMA value constant integer of the set element (bar) rate_total, // the size of the array constant integer previously calculated, // the processed array element constant integer start, // where the important data of the array begins
c double value, // element (bar) value
c Angst integer index // element (bar) index );

 //--- Methods to access data:
Integer BarRequired(); // Returns the number of bars required to draw the indicator
string name(); // returns the name of the indicator
integer period (); // returns period
integer size(); // Returns the size of the ring buffer
Double MA ( integer index); // Returns a moving average, indexed like a time series
double dema( integer index); // Returns dema value, indexed like time series

Calculated data of the indicator can be obtained from the ring buffer just like from a usual array. For example:

//--- Class with TEMA indicator calculation method:
#include CTEMAOnRingBuffer topic;

... //+----------------------------------------------------------------------------------+
//|Custom indicator iteration function |
//+------------------------------------------------------------------+
When integer calculation ( const integer rate_total, // size of array prices[] constant integer previously calculated, // constant integer start of bar processed at last call , // const double & price[] where important data starts ) // array for calculation { //--- calculation of indicators based on time series: tema.MainOnArray(rates_total,prev_calculated,price);

... //--- use data from the "tema" ring buffer,
// For example, copy the data in the indicator buffer: for ( integer i = start;i  Stopped();i++)
      TEMA_Buffer[i] = tema[rates_total- 1 -i]; // TEMA indicator line ... //--- Return the prev_calculated value for the next call: return (rates_total);
  }

When calculating TEMA, the same parameters are performed for moving averages and TEMA as well. We can use MA method to get data from MA ring buffer and DEMA( integer index) and DEMA( integer index) respectively:

 //--- use moving averages and data from the DEMA ring buffer,
// For example, copy them into the indicator buffer: for ( integer i = start;i  Stopped();i++)
    {
      MA_Buffer[i] = dema.MA(rates_total- 1 -i); // Moving average indicator DEMA_Buffer[i] = dema.DEMA(rates_total- 1 -i); // DEMA indicator line }

MT5 TEMA MQL5 CodeBase Draw using ring buffer class script

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