indicators/Momentum.mq4

   1 //+------------------------------------------------------------------+\r
   2 //|                                                     Momentum.mq4 |\r
   3 //|                      Copyright © 2004, MetaQuotes Software Corp. |\r
   4 //|                                       http://www.metaquotes.net/ |\r
   5 //+------------------------------------------------------------------+\r
   6 #property copyright "Copyright © 2004, MetaQuotes Software Corp."\r
   7 #property link      "http://www.metaquotes.net/"\r
   8 \r
   9 #property indicator_separate_window\r
  10 #property indicator_buffers 1\r
  11 #property indicator_color1 DodgerBlue\r
  12 //---- input parameters\r
  13 extern int MomPeriod=14;\r
  14 //---- buffers\r
  15 double MomBuffer[];\r
  16 //+------------------------------------------------------------------+\r
  17 //| Custom indicator initialization function                         |\r
  18 //+------------------------------------------------------------------+\r
  19 int init()\r
  20   {\r
  21    string short_name;\r
  22 //---- indicator line\r
  23    SetIndexStyle(0,DRAW_LINE);\r
  24    SetIndexBuffer(0,MomBuffer);\r
  25 //---- name for DataWindow and indicator subwindow label\r
  26    short_name="Mom("+MomPeriod+")";\r
  27    IndicatorShortName(short_name);\r
  28    SetIndexLabel(0,short_name);\r
  29 //----\r
  30    SetIndexDrawBegin(0,MomPeriod);\r
  31 //----\r
  32    return(0);\r
  33   }\r
  34 //+------------------------------------------------------------------+\r
  35 //| Momentum                                                         |\r
  36 //+------------------------------------------------------------------+\r
  37 int start()\r
  38   {\r
  39    int i,counted_bars=IndicatorCounted();\r
  40 //----\r
  41    if(Bars<=MomPeriod) return(0);\r
  42 //---- initial zero\r
  43    if(counted_bars<1)\r
  44       for(i=1;i<=MomPeriod;i++) MomBuffer[Bars-i]=0.0;\r
  45 //----\r
  46    i=Bars-MomPeriod-1;\r
  47    if(counted_bars>=MomPeriod) i=Bars-counted_bars-1;\r
  48    while(i>=0)\r
  49      {\r
  50       MomBuffer[i]=Close[i]*100/Close[i+MomPeriod];\r
  51       i--;\r
  52      }\r
  53    return(0);\r
  54   }\r
  55 //+------------------------------------------------------------------+