Support_And_Resistance_Line

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

//|                                  Support_And_Resistance_Line.mq5 |

//|                                       Copyright © 2005,  <8B@89 |

//|                                                                  |

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

#property copyright "Copyright © 2006, MetaQuotes Software Corp."

#property link      "http://www.metaquotes.net/"

//---- =><5@ 25@A88 8=48:0B>@0

#property version   "1.00"

//---- >B@8A>2:0 8=48:0B>@0 2 3;02=>< >:=5

#property indicator_chart_window 

//---- 4;O @0AGQB0 8 >B@8A>2:8 8=48:0B>@0 8A?>;L7>20=> 420 1CD5@0

#property indicator_buffers 2

//---- 8A?>;L7>20=> 2A53> 420 3@0D8G5A:8E ?>AB@>5=8O

#property indicator_plots   2

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

//| >1JO2;5=85 :>=AB0=B                          |

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

#define RESET 0          // >=AB0=B0 4;O 2>72@0B0 B5@<8=0;C :><0=4K =0 ?5@5AG5B 8=48:0B>@0

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

//|  0@0<5B@K >B@8A>2:8 <54256L53> 8=48:0B>@0   |

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

//---- >B@8A>2:0 8=48:0B>@0 1 2 2845 ;8=88

#property indicator_type1   DRAW_LINE

//---- 2 :0G5AB25 F25B0 C@>2=59 ?>445@6:8 8A?>;L7>20= @>7>2K9 F25B

#property indicator_color1  clrMagenta

//---- B>;I8=0 ;8=88 8=48:0B>@0 1 @02=0 5

#property indicator_width1  5

//---- ;8=8O 8=48:0B>@0 - A?;>H=0O

#property indicator_style1  STYLE_SOLID

//---- >B>1@065=85 <5B:8 ?>445@6:8

#property indicator_label1  "Support"

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

//|  0@0<5B@K >B@8A>2:8 1KGL3> 8=48:0B>@0       |

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

//---- >B@8A>2:0 8=48:0B>@0 2 2 2845 ;8=88

#property indicator_type2   DRAW_LINE

//---- 2 :0G5AB25 F25B0 C@>2=59 A>?@>B82;5=8O 8A?>;L7>20= 75;Q=K9 F25B

#property indicator_color2  clrLime

//---- B>;I8=0 ;8=88 8=48:0B>@0 2 @02=0 5

#property indicator_width2  5

//---- ;8=8O 8=48:0B>@0 - A?;>H=0O

#property indicator_style2  STYLE_SOLID

//---- >B>1@065=85 <54256L59 <5B:8 A>?@>B82;5=8O

#property indicator_label2 "Resistance"



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

//| E>4=K5 ?0@0<5B@K 8=48:0B>@0                 |

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

input int iPeriod=70; //?5@8>4 ATR 

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



//---- >1JO2;5=85 48=0<8G5A:8E <0AA82>2, :>B>@K5 1C4CB 2 40;L=59H5< 8A?>;L7>20=K 2 :0G5AB25 8=48:0B>@=KE 1CD5@>2

double SellBuffer[];

double BuyBuffer[];

//---

int min_rates_total;

int FRA_Handle;

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

//| Custom indicator initialization function                         |

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

void OnInit()

  {

//---- 8=8F80;870F8O 3;>10;L=KE ?5@5<5==KE 

   min_rates_total=6;

//---- ?>;CG5=85 E5=4;0 8=48:0B>@0 ATR

   FRA_Handle=iFractals(NULL,0);

   if(FRA_Handle==INVALID_HANDLE)Print(" 5 C40;>AL ?>;CG8BL E5=4; 8=48:0B>@0 FRA");



//---- ?@52@0I5=85 48=0<8G5A:>3> <0AA820 2 8=48:0B>@=K9 1CD5@

   SetIndexBuffer(0,SellBuffer,INDICATOR_DATA);

//---- >ACI5AB2;5=85 A42830 =0G0;0 >BAGQB0 >B@8A>2:8 8=48:0B>@0 1

   PlotIndexSetInteger(0,PLOT_DRAW_BEGIN,min_rates_total);

//---- 70?@5B =0 >B@8A>2:C 8=48:0B>@>< ?CABKE 7=0G5=89

   PlotIndexSetDouble(0,PLOT_EMPTY_VALUE,NULL);

//---- 8=45:A0F8O M;5<5=B>2 2 1CD5@5 :0: 2 B09<A5@88

   ArraySetAsSeries(SellBuffer,true);



//---- ?@52@0I5=85 48=0<8G5A:>3> <0AA820 2 8=48:0B>@=K9 1CD5@

   SetIndexBuffer(1,BuyBuffer,INDICATOR_DATA);

//---- >ACI5AB2;5=85 A42830 =0G0;0 >BAGQB0 >B@8A>2:8 8=48:0B>@0 2

   PlotIndexSetInteger(1,PLOT_DRAW_BEGIN,min_rates_total);

//---- 70?@5B =0 >B@8A>2:C 8=48:0B>@>< ?CABKE 7=0G5=89

   PlotIndexSetDouble(1,PLOT_EMPTY_VALUE,NULL);

//---- 8=45:A0F8O M;5<5=B>2 2 1CD5@5 :0: 2 B09<A5@88

   ArraySetAsSeries(BuyBuffer,true);



//---- #AB0=>2:0 D>@<0B0 B>G=>AB8 >B>1@065=8O 8=48:0B>@0

   IndicatorSetInteger(INDICATOR_DIGITS,_Digits);

//---- 8<O 4;O >:>= 40==KE 8 ;M910 4;O AC1J>:>= 

   string short_name="Support_And_Resistance_Line%("+string(iPeriod)+")";

   IndicatorSetString(INDICATOR_SHORTNAME,short_name);

//----   

  }

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

//| 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[]

                )

  {

//---- ?@>25@:0 :>;8G5AB20 10@>2 =0 4>AB0B>G=>ABL 4;O @0AGQB0

   if(BarsCalculated(FRA_Handle)<rates_total || rates_total<min_rates_total) return(RESET);



//---- >1JO2;5=8O ;>:0;L=KE ?5@5<5==KE 

   int to_copy,limit,bar;

   double FRAUp[],FRALo[],upVel,loVel;



//---- @0AGQBK =5>1E>48<>3> :>;8G5AB20 :>?8@C5<KE 40==KE 8 AB0@B>2>3> =><5@0 limit 4;O F8:;0 ?5@5AGQB0 10@>2

   if(prev_calculated>rates_total || prev_calculated<=0)// ?@>25@:0 =0 ?5@2K9 AB0@B @0AGQB0 8=48:0B>@0

     {

      limit=rates_total-min_rates_total-1; // AB0@B>2K9 =><5@ 4;O @0AGQB0 2A5E 10@>2

      BuyBuffer[limit+1]=SellBuffer[limit+1]=NULL;

     }

   else

     {

      limit=rates_total-prev_calculated+2; // AB0@B>2K9 =><5@ 4;O @0AGQB0 =>2KE 10@>2

     }

   to_copy=limit+3;



//---- 8=45:A0F8O M;5<5=B>2 2 <0AA820E :0: 2 B09<A5@8OE  

   ArraySetAsSeries(FRAUp,true);

   ArraySetAsSeries(FRALo,true);

   ArraySetAsSeries(high,true);

   ArraySetAsSeries(low,true);



//---- :>?8@C5< 2=>2L ?>O282H85AO 40==K5 2 <0AA82K

   if(CopyBuffer(FRA_Handle,0,0,to_copy,FRAUp)<=0) return(RESET);

   if(CopyBuffer(FRA_Handle,1,0,to_copy,FRALo)<=0) return(RESET);

 

//---- >A=>2=>9 F8:; @0AGQB0 8=48:0B>@0

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

     {

       BuyBuffer[bar]=SellBuffer[bar]=NULL;

       

       upVel=NormalizeDouble(FRAUp[bar],_Digits);

       loVel=NormalizeDouble(FRALo[bar],_Digits);

       

       if(upVel!=EMPTY_VALUE) BuyBuffer[bar]=high[bar]; else BuyBuffer[bar]=BuyBuffer[bar+1];

       if(loVel!=EMPTY_VALUE) SellBuffer[bar]=low[bar]; else SellBuffer[bar]=SellBuffer[bar+1];

     }

//----   

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

     {

      if(BuyBuffer[bar+1]!=BuyBuffer[bar]&&BuyBuffer[bar]) BuyBuffer[bar+1]=NULL;

      if(SellBuffer[bar+1]!=SellBuffer[bar]&&SellBuffer[bar]) SellBuffer[bar+1]=NULL;

     }

//----     

   return(rates_total);

  }

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