Murreys_Math_Oscillator_v1

ÿþ//+------------------------------------------------------------------+

//|                                      Murreys_Math_Oscillator.mq5 |

//|                        Copyright 2018, MetaQuotes Software Corp. |

//|                                                 https://mql5.com |

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

#property copyright "Copyright 2018, MetaQuotes Software Corp."

#property link      "https://mql5.com"

#property version   "1.00"

#property description "Murreys Math Oscillator"

#property indicator_separate_window

#property indicator_buffers 2

#property indicator_plots   1

//--- plot MMO

#property indicator_label1  "Murreys Math"

#property indicator_type1   DRAW_COLOR_HISTOGRAM

#property indicator_color1  clrLime,clrSpringGreen,clrLimeGreen,clrGreen,clrSaddleBrown,clrChocolate,clrTan,clrRed

#property indicator_style1  STYLE_SOLID

#property indicator_width1  2

//--- enums

enum ENUM_INPUT_YES_NO

  {

   INPUT_YES   =  1, // Yes

   INPUT_NO    =  0  // No

  };

//--- input parameters

input uint              InpPeriod      =  100;        // Period

input double            InpMultiplier  =  0.125;      // Multiplier

input ENUM_INPUT_YES_NO InpShowLevels  =  INPUT_YES;  // Show levels

//--- indicator buffers

double         BufferMMO[];

double         BufferColors[];

//--- global variables

double         multiplier;

double         level_2;

double         level_4;

double         level_6;

double         level_8;

int            period;

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

//| Custom indicator initialization function                         |

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

int OnInit()

  {

//--- set global variables

   period=int(InpPeriod<1 ? 1 : InpPeriod);

   multiplier=(InpMultiplier<0 ? 0 : InpMultiplier);

   level_2=2*multiplier;

   level_4=4*multiplier;

   level_6=6*multiplier;

   level_8=8*multiplier;

//--- indicator buffers mapping

   SetIndexBuffer(0,BufferMMO,INDICATOR_DATA);

   SetIndexBuffer(1,BufferColors,INDICATOR_COLOR_INDEX);

//--- setting indicator parameters

   IndicatorSetString(INDICATOR_SHORTNAME,"Murreys Math oscillator ("+(string)period+")");

   IndicatorSetInteger(INDICATOR_DIGITS,Digits());

   IndicatorSetInteger(INDICATOR_LEVELS,(InpShowLevels ? 8 : 0));

   if(InpShowLevels)

     {

      IndicatorSetDouble(INDICATOR_LEVELVALUE,0, level_8);

      IndicatorSetDouble(INDICATOR_LEVELVALUE,1, level_6);

      IndicatorSetDouble(INDICATOR_LEVELVALUE,2, level_4);

      IndicatorSetDouble(INDICATOR_LEVELVALUE,3, level_2);

      IndicatorSetDouble(INDICATOR_LEVELVALUE,4,-level_2);

      IndicatorSetDouble(INDICATOR_LEVELVALUE,5,-level_4);

      IndicatorSetDouble(INDICATOR_LEVELVALUE,6,-level_6);

      IndicatorSetDouble(INDICATOR_LEVELVALUE,7,-level_8);

     }

//--- setting buffer arrays as timeseries

   ArraySetAsSeries(BufferMMO,true);

   ArraySetAsSeries(BufferColors,true);

//---

   return(INIT_SUCCEEDED);

  }

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

//| Custom indicator iteration function                              |

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

int OnCalculate(const int rates_total,

                const int prev_calculated,

                const datetime &time[],

                const double &open[],

                const double &high[],

                const double &low[],

                const double &close[],

                const long &tick_volume[],

                const long &volume[],

                const int &spread[])

  {

//--- #AB0=>2:0 <0AA82>2 1CD5@>2 :0: B09<A5@89

   ArraySetAsSeries(high,true);

   ArraySetAsSeries(low,true);

   ArraySetAsSeries(close,true);

//--- @>25@:0 8 @0AGQB :>;8G5AB20 ?@>AG8BK205<KE 10@>2

   if(rates_total<fmax(period,4)) return 0;

//--- @>25@:0 8 @0AGQB :>;8G5AB20 ?@>AG8BK205<KE 10@>2

   int limit=rates_total-prev_calculated;

   if(limit>1)

     {

      limit=rates_total-1;

      ArrayInitialize(BufferMMO,EMPTY_VALUE);

     }



//---  0AGQB 8=48:0B>@0

   for(int i=limit; i>=0 && !IsStopped(); i--)

     {

      int bl=Lowest(NULL,PERIOD_CURRENT,period,i);

      int bh=Highest(NULL,PERIOD_CURRENT,period,i);

      if(bl==WRONG_VALUE || bh==WRONG_VALUE)

         continue;

      double min=low[bl];

      double max=high[bh];

      double range=max-min;

      double mid=min+multiplier*range*4.0;



      BufferMMO[i]=(range!=0 ? 2.0*(close[i]-mid)/range : 0);

      

      if(BufferMMO[i]>0)

        {

         BufferColors[i]=0;

         if(BufferMMO[i]>=level_6)

            BufferColors[i]=3;

         else

           {

            if(BufferMMO[i]>=level_4)

               BufferColors[i]=2;

            else

              {

               if(BufferMMO[i]>=level_2)

                  BufferColors[i]=1;

              }

           }

        }

      else

        {

         BufferColors[i]=4;

         if(BufferMMO[i]<=-level_6)

            BufferColors[i]=7;

         else

           {

            if(BufferMMO[i]<=-level_4)

               BufferColors[i]=6;

            else

              {

               if(BufferMMO[i]<=-level_2)

                  BufferColors[i]=5;

              }

           }

        }

     }



//--- return value of prev_calculated for next call

   return(rates_total);

  }

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

//| >72@0I05B 8=45:A <0:A8<0;L=>3> 7=0G5=8O B09<A5@88 High          |

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

int Highest(const string symbol_name,const ENUM_TIMEFRAMES timeframe,int count,const int start,const bool as_series=true)

  {

   double array[];

   ArraySetAsSeries(array,as_series);

   return(CopyHigh(symbol_name,timeframe,start,count,array)==count ? ArrayMaximum(array)+start : WRONG_VALUE);

  }

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

//| >72@0I05B 8=45:A <8=8<0;L=>3> 7=0G5=8O B09<A5@88 Low            |

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

int Lowest(const string symbol_name,const ENUM_TIMEFRAMES timeframe,const int count,const int start,const bool as_series=true)

  {

   double array[];

   ArraySetAsSeries(array,as_series);

   return(CopyLow(symbol_name,timeframe,start,count,array)==count ? ArrayMinimum(array)+start : WRONG_VALUE);

  }

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