Mt4/mql4 getting started to be proficient in EA tutorial lesson 7 - common functions of MQL language (VII) - index value taking function

double iMA()

obtain MA Data of indicators , This function is 7 Parameters

double  iMA( 
   string       symbol,           //  Trade variety 
   int          timeframe,        //  Chart cycle 
   int          ma_period,        //  Moving average time period 
   int          ma_shift,         //  translation 
   int          ma_method,        //  Moving average 
   int          applied_price,    //  Application price  
   int          shift             //  Value 
   )

Read the above parameter settings MA Code instance ：

iMA(
  NULL,         // Current variety 
  0,            // Current chart period 
  14,           //MA cycle time  14
  0,            // translation  0
  MODE_SMA,     // Moving average  Simple
  PRICE_MEDIAN, // Application price  Median Price
  0             // At present MA value  ,1  Means the previous one MA value   By analogy 
  );

double iMACD(）

obtain MACD Indicator data , This function is 8 Parameters

double  iMACD( 
   string       symbol,           //  Trade variety 
   int          timeframe,        //  Chart cycle 
   int          fast_ema_period,  //  fast EMA
   int          slow_ema_period,  //  slow EMA
   int          signal_period,    // MACD SMA 
   int          applied_price,    //  Application price  
   int          mode,             //  Value mode  MODE_MAIN  take MACD Mainline value  MODE_SIGNAL  take MACD Signal value 
   int          shift             //  Value  
   );

This indicator parameter code example ：

iMACD(
  NULL,        // Current transaction category 
  0,           // Current chart period 
  12,          // fast EMA
  26,          // slow EMA
  9,           //MACD SMA
  PRICE_CLOSE, // Application price 
  MODE_MAIN,   // take MACD Column line value , MODE_SIGNAL,  take MACD Signal value 
  0            // At present K Line MACD Column line value  ,1  Indicates the value of the previous column line ,  By analogy 
  );

double iRSI(）

obtain RSI Indicator data , This function is 5 Parameters

double  iRSI( 
   string       symbol,           //  Trade variety 
   int          timeframe,        //  Chart cycle 
   int          period,           // RSI  cycle 
   int          applied_price,    //  Application price 
   int          shift             //  Value  
   );

The indicator code example code

iRSI(
  NULL,       // Current transaction category 
  0,          // Current chart period 
  14,         //RSI cycle 
  PRICE_CLOSE,// Application price 
  0           // At present RSI value  ,1  Means the previous one RSI value   By analogy 
  );

double iStochastic(）

obtain Stochastic Indicator data , This function is 9 Parameters

double  iStochastic( 
   string       symbol,           //  Trade variety 
   int          timeframe,        //  Chart cycle 
   int          Kperiod,          // K Value period  
   int          Dperiod,          // D Value period 
   int          slowing,          // slowing value  
   int          method,           //  Statistical methods 
   int          price_field,      // price (Low/High or Close/Close) 
   int          mode,             //  Value mode ,MODE_MAIN Take the fast line value ,MODE_SIGNAL Take the slow line value  
   int          shift             //  Value 
   );

The indicator instance code

iStochastic(
  NULL,          // Current transaction category 
  0,             // Current chart period 
  5,             //K Value period 
  3,             //D Value period 
  3,             // Slowing value 
  MODE_SMA,      // Statistical price method  Simple
  0,             //
  MODE_SIGNAL,   // take Stochastic Signal value  , MODE_MAIN Take the fast line value 
  0              // At present Stochastic Signal value ,1  Means the previous one Stochastic Signal value   And so on 
  );

double iCustom( ）

Get custom indicator data , The function parameters are indefinite

double  iCustom( 
   string       symbol,           //  Trade variety 
   int          timeframe,        //  Chart cycle 
   string       name,             //  Index name 
   ...                            //  Index parameters , Can be more 
   int          mode,             //  Value mode 
   int          shift             //  Value 
   );

Code instance to get custom metrics ZIGZAG Signal data

iCustom( 
   NULL,        //  Current transaction category 
   0,           //  Current chart period 
   "ZIGZAG",    //  Index name 
   12,          //  Index parameters  Depth
   5,           //  Index parameters  Deviation
   3,           //  Index parameters  Backstep
   0,           //  Value mode  ZIGZAG There is only one output parameter   Can only be 0
   0,           //  At present ZIGZAG value ,1  For the previous ZIGZGA value   By analogy 
   );

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