indicators/Accelerator.mq4

   1 //+------------------------------------------------------------------+\r
   2 //|                                                  Accelerator.mq4 |\r
   3 //|                      Copyright © 2005, MetaQuotes Software Corp. |\r
   4 //|                                       http://www.metaquotes.net/ |\r
   5 //+------------------------------------------------------------------+\r
   6 #property  copyright "Copyright © 2005, MetaQuotes Software Corp."\r
   7 #property  link      "http://www.metaquotes.net/"\r
   8 //---- indicator settings\r
   9 #property  indicator_separate_window\r
  10 #property  indicator_buffers 3\r
  11 #property  indicator_color1  Black\r
  12 #property  indicator_color2  Green\r
  13 #property  indicator_color3  Red\r
  14 //---- indicator buffers\r
  15 double     ExtBuffer0[];\r
  16 double     ExtBuffer1[];\r
  17 double     ExtBuffer2[];\r
  18 double     ExtBuffer3[];\r
  19 double     ExtBuffer4[];\r
  20 //+------------------------------------------------------------------+\r
  21 //| Custom indicator initialization function                         |\r
  22 //+------------------------------------------------------------------+\r
  23 int init()\r
  24   {\r
  25 //---- 2 additional buffers are used for counting.\r
  26    IndicatorBuffers(5);\r
  27 //---- drawing settings\r
  28    SetIndexStyle(0,DRAW_NONE);\r
  29    SetIndexStyle(1,DRAW_HISTOGRAM);\r
  30    SetIndexStyle(2,DRAW_HISTOGRAM);\r
  31    IndicatorDigits(Digits+2);\r
  32    SetIndexDrawBegin(0,38);\r
  33    SetIndexDrawBegin(1,38);\r
  34    SetIndexDrawBegin(2,38);\r
  35 //---- 4 indicator buffers mapping\r
  36    SetIndexBuffer(0,ExtBuffer0);\r
  37    SetIndexBuffer(1,ExtBuffer1);\r
  38    SetIndexBuffer(2,ExtBuffer2);\r
  39    SetIndexBuffer(3,ExtBuffer3);\r
  40    SetIndexBuffer(4,ExtBuffer4);\r
  41 //---- name for DataWindow and indicator subwindow label\r
  42    IndicatorShortName("AC");\r
  43    SetIndexLabel(1,NULL);\r
  44    SetIndexLabel(2,NULL);\r
  45 //---- initialization done\r
  46    return(0);\r
  47   }\r
  48 //+------------------------------------------------------------------+\r
  49 //| Accelerator/Decelerator Oscillator                               |\r
  50 //+------------------------------------------------------------------+\r
  51 int start()\r
  52   {\r
  53    int    limit;\r
  54    int    counted_bars=IndicatorCounted();\r
  55    double prev,current;\r
  56    //---- last counted bar will be recounted\r
  57    if(counted_bars>0) counted_bars--;\r
  58    limit=Bars-counted_bars;\r
  59    //---- macd counted in the 1-st additional buffer\r
  60    for(int i=0; i<limit; i++)\r
  61       ExtBuffer3[i]=iMA(NULL,0,5,0,MODE_SMA,PRICE_MEDIAN,i)-iMA(NULL,0,34,0,MODE_SMA,PRICE_MEDIAN,i);\r
  62    //---- signal line counted in the 2-nd additional buffer\r
  63    for(i=0; i<limit; i++)\r
  64       ExtBuffer4[i]=iMAOnArray(ExtBuffer3,Bars,5,0,MODE_SMA,i);\r
  65    //---- dispatch values between 2 buffers\r
  66    bool up=true;\r
  67    for(i=limit-1; i>=0; i--)\r
  68      {\r
  69       current=ExtBuffer3[i]-ExtBuffer4[i];\r
  70       prev=ExtBuffer3[i+1]-ExtBuffer4[i+1];\r
  71       if(current>prev) up=true;\r
  72       if(current<prev) up=false;\r
  73       if(!up)\r
  74         {\r
  75          ExtBuffer2[i]=current;\r
  76          ExtBuffer1[i]=0.0;\r
  77         }\r
  78       else\r
  79         {\r
  80          ExtBuffer1[i]=current;\r
  81          ExtBuffer2[i]=0.0;\r
  82         }\r
  83        ExtBuffer0[i]=current;\r
  84      }\r
  85    //---- done\r
  86    return(0);\r
  87   }\r
  88 //+------------------------------------------------------------------+\r
  89 \r