DMI

Forex Trader 2005.04.22 02:38

The DMI indicator in MetaTrader crosses and movement is not like DMI on TradeStation. The EasyLanguage code in TradeStation looks much differnet than the DMI code in MetaTrader4. Does anyone have ideas or code that mimics TradeStation DMI? Without this, I will not be able to use MetaTrader4 as my system depends on this.

Thanks for any help.

Forex Trader 2005.04.22 09:18 #1

we have Average Directional Movement Index, ADX not DMI. You can see sources in our samples. ADX.mq4

//+------------------------------------------------------------------+
//|                                                          ADX.mq4 |
//|                      Copyright © 2005, MetaQuotes Software Corp. |
//|                                       http://www.metaquotes.net/ |
//+------------------------------------------------------------------+
#property copyright "Copyright © 2005, MetaQuotes Software Corp."
#property link      "http://www.metaquotes.net/"

#property indicator_separate_window
#property indicator_buffers 3
#property indicator_color1 LightSeaGreen
#property indicator_color2 YellowGreen
#property indicator_color3 Wheat
//---- input parameters
extern int ADXPeriod=14;
//---- buffers
double ADXBuffer[];
double PlusDiBuffer[];
double MinusDiBuffer[];
double PlusSdiBuffer[];
double MinusSdiBuffer[];
double TempBuffer[];
//+------------------------------------------------------------------+
//| Custom indicator initialization function                         |
//+------------------------------------------------------------------+
int init()
  {
//---- 3 additional buffers are used for counting.
   IndicatorBuffers(6);
//---- indicator buffers
   SetIndexBuffer(0,ADXBuffer);
   SetIndexBuffer(1,PlusDiBuffer);
   SetIndexBuffer(2,MinusDiBuffer);
   SetIndexBuffer(3,PlusSdiBuffer);
   SetIndexBuffer(4,MinusSdiBuffer);
   SetIndexBuffer(5,TempBuffer);
//---- name for DataWindow and indicator subwindow label
   IndicatorShortName("ADX("+ADXPeriod+")");
   SetIndexLabel(0,"ADX");
   SetIndexLabel(1,"+DI");
   SetIndexLabel(2,"-DI");
//----
   SetIndexDrawBegin(0,ADXPeriod);
   SetIndexDrawBegin(1,ADXPeriod);
   SetIndexDrawBegin(2,ADXPeriod);
//----
   return(0);
  }
//+------------------------------------------------------------------+
//| Average Directional Movement Index                               |
//+------------------------------------------------------------------+
int start()
  {
   double pdm,mdm,tr;
   double price_high,price_low;
   int    starti,i,counted_bars=IndicatorCounted();
//----
   i=Bars-2;
   PlusSdiBuffer[i+1]=0;
   MinusSdiBuffer[i+1]=0;
   if(counted_bars>=i) i=Bars-counted_bars-1;
   starti=i;
//----
   while(i>=0)
     {
      price_low=Low[i];
      price_high=High[i];
      //----
      pdm=price_high-High[i+1];
      mdm=Low[i+1]-price_low;
      if(pdm<0) pdm=0;  // +DM
      if(mdm<0) mdm=0;  // -DM
      if(pdm==mdm) { pdm=0; mdm=0; }
      else if(pdm<mdm) pdm=0;
           else if(mdm<pdm) mdm=0;
      //---- calculate true range
      double num1=MathAbs(price_high-price_low);
      double num2=MathAbs(price_high-Close[i+1]);
      double num3=MathAbs(price_low-Close[i+1]);
      tr=MathMax(num1,num2);
      tr=MathMax(tr,num3);
      //---- counting plus/minus direction
      if(tr==0) { PlusSdiBuffer[i]=0; MinusSdiBuffer[i]=0; }
      else      { PlusSdiBuffer[i]=100.0*pdm/tr; MinusSdiBuffer[i]=100.0*mdm/tr; }
      //----
      i--;
     }
//---- last counted bar will be recounted
   if(counted_bars>0) counted_bars--;
   int limit=Bars-counted_bars;
//---- apply EMA to +DI
   for(i=0; i<=limit; i++)
      PlusDiBuffer[i]=iMAOnArray(PlusSdiBuffer,Bars,ADXPeriod,0,MODE_EMA,i);
//---- apply EMA to -DI
   for(i=0; i<=limit; i++)
      MinusDiBuffer[i]=iMAOnArray(MinusSdiBuffer,Bars,ADXPeriod,0,MODE_EMA,i);
//---- Directional Movement (DX)
   i=Bars-2;
   TempBuffer[i+1]=0;
   i=starti;
   while(i>=0)
     {
      double div=MathAbs(PlusDiBuffer[i]+MinusDiBuffer[i]);
      if(div==0.00) TempBuffer[i]=0;
      else TempBuffer[i]=100*(MathAbs(PlusDiBuffer[i]-MinusDiBuffer[i])/div);
      i--;
     }
//---- ADX is exponential moving average on DX
   for(i=0; i<limit; i++)
      ADXBuffer[i]=iMAOnArray(TempBuffer,Bars,ADXPeriod,0,MODE_EMA,i);
//----
   return(0);
  }
//+------------------------------------------------------------------+

Forex Trader 2005.04.22 12:38 #2

I have already looked at ADX. What I am refering to is that +DI and -DI in ADX don't track DMI in TradeStation.

Any help would be appreciated.

we have Average Directional Movement Index, ADX not DMI. You can see sources in our samples. ADX.mq4

//+------------------------------------------------------------------+
//|                                                          ADX.mq4 |
//|                      Copyright © 2005, MetaQuotes Software Corp. |
//|                                       http://www.metaquotes.net/ |
//+------------------------------------------------------------------+
#property copyright "Copyright © 2005, MetaQuotes Software Corp."
#property link      "http://www.metaquotes.net/"

#property indicator_separate_window
#property indicator_buffers 3
#property indicator_color1 LightSeaGreen
#property indicator_color2 YellowGreen
#property indicator_color3 Wheat
//---- input parameters
extern int ADXPeriod=14;
//---- buffers
double ADXBuffer[];
double PlusDiBuffer[];
double MinusDiBuffer[];
double PlusSdiBuffer[];
double MinusSdiBuffer[];
double TempBuffer[];
//+------------------------------------------------------------------+
//| Custom indicator initialization function                         |
//+------------------------------------------------------------------+
int init()
  {
//---- 3 additional buffers are used for counting.
   IndicatorBuffers(6);
//---- indicator buffers
   SetIndexBuffer(0,ADXBuffer);
   SetIndexBuffer(1,PlusDiBuffer);
   SetIndexBuffer(2,MinusDiBuffer);
   SetIndexBuffer(3,PlusSdiBuffer);
   SetIndexBuffer(4,MinusSdiBuffer);
   SetIndexBuffer(5,TempBuffer);
//---- name for DataWindow and indicator subwindow label
   IndicatorShortName("ADX("+ADXPeriod+")");
   SetIndexLabel(0,"ADX");
   SetIndexLabel(1,"+DI");
   SetIndexLabel(2,"-DI");
//----
   SetIndexDrawBegin(0,ADXPeriod);
   SetIndexDrawBegin(1,ADXPeriod);
   SetIndexDrawBegin(2,ADXPeriod);
//----
   return(0);
  }
//+------------------------------------------------------------------+
//| Average Directional Movement Index                               |
//+------------------------------------------------------------------+
int start()
  {
   double pdm,mdm,tr;
   double price_high,price_low;
   int    starti,i,counted_bars=IndicatorCounted();
//----
   i=Bars-2;
   PlusSdiBuffer[i+1]=0;
   MinusSdiBuffer[i+1]=0;
   if(counted_bars>=i) i=Bars-counted_bars-1;
   starti=i;
//----
   while(i>=0)
     {
      price_low=Low[i];
      price_high=High[i];
      //----
      pdm=price_high-High[i+1];
      mdm=Low[i+1]-price_low;
      if(pdm<0) pdm=0;  // +DM
      if(mdm<0) mdm=0;  // -DM
      if(pdm==mdm) { pdm=0; mdm=0; }
      else if(pdm<mdm) pdm=0;
           else if(mdm<pdm) mdm=0;
      //---- calculate true range
      double num1=MathAbs(price_high-price_low);
      double num2=MathAbs(price_high-Close[i+1]);
      double num3=MathAbs(price_low-Close[i+1]);
      tr=MathMax(num1,num2);
      tr=MathMax(tr,num3);
      //---- counting plus/minus direction
      if(tr==0) { PlusSdiBuffer[i]=0; MinusSdiBuffer[i]=0; }
      else      { PlusSdiBuffer[i]=100.0*pdm/tr; MinusSdiBuffer[i]=100.0*mdm/tr; }
      //----
      i--;
     }
//---- last counted bar will be recounted
   if(counted_bars>0) counted_bars--;
   int limit=Bars-counted_bars;
//---- apply EMA to +DI
   for(i=0; i<=limit; i++)
      PlusDiBuffer[i]=iMAOnArray(PlusSdiBuffer,Bars,ADXPeriod,0,MODE_EMA,i);
//---- apply EMA to -DI
   for(i=0; i<=limit; i++)
      MinusDiBuffer[i]=iMAOnArray(MinusSdiBuffer,Bars,ADXPeriod,0,MODE_EMA,i);
//---- Directional Movement (DX)
   i=Bars-2;
   TempBuffer[i+1]=0;
   i=starti;
   while(i>=0)
     {
      double div=MathAbs(PlusDiBuffer[i]+MinusDiBuffer[i]);
      if(div==0.00) TempBuffer[i]=0;
      else TempBuffer[i]=100*(MathAbs(PlusDiBuffer[i]-MinusDiBuffer[i])/div);
      i--;
     }
//---- ADX is exponential moving average on DX
   for(i=0; i<limit; i++)
      ADXBuffer[i]=iMAOnArray(TempBuffer,Bars,ADXPeriod,0,MODE_EMA,i);
//----
   return(0);
  }
//+------------------------------------------------------------------+

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