Indicator compiles but won't show ??

[mnmnmmnnmnmn]

Hi there, 

This is on my MT4 platform. Basically it's the ADX indicator what allows me to choose the periods for both ADX and DIs. 

It compiles ok, but it just doesn't show on the chart. Is there anyone that can take a look at it please? I am confused.

Many Thanks!

//+------------------------------------------------------------------+

//|                                                       ADX.mq4 |

//|                      Copyright ?2005, MetaQuotes Software Corp. |

//|                                        http://www.metaquotes.net |

//+------------------------------------------------------------------+

#property copyright "Copyright ?2004, 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

#property indicator_level1 20

//---- input parameters

extern int ADXPeriod=14, DiPlusPeriod = 34, DiMinusPeriod=34;

//---- buffers

double ADXBuffer[];

double PlusDiBuffer[];

double MinusDiBuffer[];

double PlusSdiBuffer[];

double MinusSdiBuffer[];

double TRBuffer[];

double TempBuffer[];

//+------------------------------------------------------------------+

//| Custom indicator initialization function                         |

//+------------------------------------------------------------------+

int init()

  {

//---- 3 additional buffers are used for counting.

   IndicatorBuffers(7);

//---- indicator buffers

   SetIndexBuffer(0,ADXBuffer);

   SetIndexBuffer(1,PlusDiBuffer);

   SetIndexBuffer(2,MinusDiBuffer);

   SetIndexBuffer(3,PlusSdiBuffer);

   SetIndexBuffer(4,MinusSdiBuffer);

   SetIndexBuffer(5,TempBuffer);

   SetIndexBuffer(6, TRBuffer );

//---- name for DataWindow and indicator subwindow label

   IndicatorShortName("ADX("+ADXPeriod+", DI-: "+DiMinusPeriod+", DI+: "+DiPlusPeriod+")");

   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();

//----

   

    //int limit=Bars-2;

   int limit=Bars-counted_bars;

   if(counted_bars>0) limit++;

   i = limit;

   starti = i;

//----

   while(i>=0)

     {

      price_low=Low[i];

      price_high=High[i];

      //----

      pdm = 0.0;

      mdm = 0.0;

      if ( price_high > High[i+1] )

         pdm = price_high - High[i+1];

      if ( price_low < Low[i+1] )

         mdm = Low[i+1] - price_low;

      

      if ( pdm < mdm )

         pdm = 0.0;

      else if ( mdm < pdm )

         mdm = 0.0;

      //---- absolute 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

      PlusSdiBuffer[i]=pdm; 

      MinusSdiBuffer[i]=mdm;

      TRBuffer[i] = tr;

     //----

      i--;

     }

//---- apply EMA to +DI

   for(i=0; i<limit; i++) {

//----    apply EMA to TR

      TRBuffer[i]=iMAOnArray(TRBuffer,0,ADXPeriod,0,MODE_EMA,i);

      PlusDiBuffer[i] = PlusDiBuffer[i+1];

      MinusDiBuffer[i] = MinusDiBuffer[i+1];

      if ( TRBuffer[i] != 0 ) {

         PlusDiBuffer[i]=iMAOnArray(PlusSdiBuffer,Bars,DiPlusPeriod,0,MODE_EMA,i) / TRBuffer[i];

//----    apply EMA to -DI

         MinusDiBuffer[i]=iMAOnArray(MinusSdiBuffer,Bars,DiMinusPeriod,0,MODE_EMA,i) / TRBuffer[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]=TempBuffer[i+1];

      else TempBuffer[i]=MathAbs(PlusDiBuffer[i]-MinusDiBuffer[i]) / div;

      i--;

     }

//---- ADX is exponential moving average on DX

   for(i=0; i<limit; i++) {

      ADXBuffer[i]=iMAOnArray(TempBuffer,0,ADXPeriod,0,MODE_EMA,i) * 100.0;

      PlusDiBuffer[i] = PlusDiBuffer[i] * 100.0;

      MinusDiBuffer[i] = MinusDiBuffer[i] * 100.0;

   }

//----

   return(0);

  }

//+------------------------------------------------------------------+

[mnmnmmnnmnmn]

Here is the original file.

[Eleni Anna Branou]

Use the SRC button to post your code.

[Mladen Rakic]

Build 1090

Set explicitly (using SetIndexStyle()) each display buffer to DRAW_LINE style

Like this :

   SetIndexBuffer(0,ADXBuffer); SetIndexStyle(0,DRAW_LINE);
   SetIndexBuffer(1,PlusDiBuffer); SetIndexStyle(1,DRAW_LINE);
   SetIndexBuffer(2,MinusDiBuffer); SetIndexStyle(2,DRAW_LINE);

[mnmnmmnnmnmn]

Thanks Eleni & Mladen,

Changed the lines and it's working perfectly now. You are great!

[William Roeder]

mnmnmmnnmnmn: This is on my MT4 platform.

1. Why did you post your MT4 question in the Root / MT5 Indicators section instead of the MQL4 section, (bottom of the Root page?)
             General rules and best pratices of the Forum. - General - MQL5 programming forum
   Next time post in the correct place. The moderators will likely move this thread there soon.

2. When you post code please use the CODE button (Alt-S)! (For large amounts of code, attach it.) Please edit your post.
             General rules and best pratices of the Forum. - General - MQL5 programming forum