trading - How to solve Fractals over N-bars period in MQL4, similar to IQOptions Fractals indicator? -
i learning mql4 myself. registered iqoptions binary options trading.
i planning write indicators myself trading system. fractals lot, not mql4-supported fractal logic, keen on iqoptions specific one.
in mql4, find fractal use ifractal() doesn't take parameters other offset.
i convinced myself finds fractal on 3 bars. doing lot of homework, have realized iqoptions indicator doing more fractal. please find attached screenshot.
i wrote many programs added recent 1 below. need figure out has been there. image attached iqoption screenshot, fractals on 20 bar period.
//+------------------------------------------------------------------+ //| bulls.mq4 | //| copyright 2005-2014, metaquotes software corp. | //| http://www.mql4.com | //+------------------------------------------------------------------+ #property copyright "2005-2014, metaquotes software corp." #property link "http://www.mql4.com" #property description "fractals tanya" #property strict //--- indicator settings #property indicator_chart_window #property indicator_buffers 2 #property indicator_color1 red #property indicator_color2 green #property indicator_width1 1 #property indicator_width2 1 #property indicator_style1 style_solid #property indicator_style2 style_solid //--- input parameter input int b_f=20; //extern int allb=240; //--- buffers double extfractalsupbuffer[]; double extfractalsdownbuffer[]; //+------------------------------------------------------------------+ //| custom indicator initialization function | //+------------------------------------------------------------------+ void oninit(void) { //--- 1 additional buffer used counting. indicatorbuffers(2); indicatordigits(digits); //--- indicator line setindexbuffer( 0, extfractalsupbuffer ); setindexstyle( 0, draw_arrow ); setindexarrow( 0, 234 ); setindexlabel( 0, null ); setindexemptyvalue( 0, 0.0 ); setindexbuffer( 1, extfractalsdownbuffer ); setindexstyle( 1, draw_arrow ); setindexarrow( 1, 233 ); setindexlabel( 1, null ); setindexemptyvalue( 1, 0.0 ); setindexdrawbegin(0,b_f); setindexdrawbegin(1,b_f); indicatorshortname( "fractalstanya" ); indicatordigits( digits ); } //+------------------------------------------------------------------+ //| bulls power | //+------------------------------------------------------------------+ 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[]) { int limit=rates_total-prev_calculated; //--- if(rates_total<=b_f || b_f<=0) return(0); //--- if(prev_calculated>0) limit++; int i=0,j=0,k=0; double upfratal=0.0; double downfratal=0.0; int x=0; int y=0; for(int t=0; t<limit+b_f; t++) { double uptempfractal=ifractals(null,period(),mode_upper,t); double downtempfractal=ifractals(null,period(),mode_lower,t); if(uptempfractal!=0&&uptempfractal>upfratal) { upfratal=uptempfractal; j=t; } if(downtempfractal!=0.0&&downfratal==0.0) { downfratal=downtempfractal; } if(downtempfractal!=0.0&&downtempfractal<=downfratal) { downfratal=downtempfractal; k=t; } i++; if(i==b_f) { if(upfratal!=0.0) { if(x==0||(j-x)>=b_f) { x=j; extfractalsupbuffer[j]=upfratal; } } if(downfratal!=0.0) { if(y==0||(k-y)>=b_f) { y=k; extfractalsdownbuffer[k]=downfratal; } } i=0; upfratal=0.0; downfratal=0.0; } } /*for(int t=0; t<limit; t++) { double upfratal=ifractals(null,period(),mode_upper,t); double downfratal=ifractals(null,period(),mode_lower,t); if(upfratal!=0.0)extfractalsupbuffer[t]=upfratal; else if(downfratal!=0.0)extfractalsdownbuffer[t]=downfratal; }*/ return(rates_total); }
i assume want achieve find fractals in last x bars. had same issue , in case wanted find recent fractals, both , down, function created. used calculate trailing stop. changing function can find highest , lowest fractals.
i hope helps
// --------------------------------------------------------------------- bool fractalsup = false; bool fractalsdown = false; double fractalsupprice = 0; double fractalsdownprice = 0; // -----------------------------------------------number of bars scan int fractalslimit = 15; void findfractals(){ // ------------------------------------------(re)-initialization of variables fractalsup = false; fractalsdown = false; fractalsupprice = 0; fractalsdownprice = 0; /* --------------------------------------a for(){...} loop scan last fractalslimit candles, starting oldest , finishing recent 1 */ ( int = fractalslimit; >= 0; i-- ){ // ---------------------------------------------------------------------------- double fu = ifractals( null, 0, mode_upper, ); double fl = ifractals( null, 0, mode_lower, ); /* if there posack of fractal on candle value greater 0 , equal highest or lowest price */ // --------------------------------------------------------------------------- if ( fu > 0 ){ // if there upper fractal fractalsupprice = fu; // store value , fractalsup = true; // set true fractalsup variable fractalsdown = false; // set false on posack_up } // ---------------------------------------------------------------------------- if ( fl > 0 ){ // if there lower fractal fractalsdownprice = fl; // store value , fractalsup = false; // set false on posack_lo fractalsdown = true; // set true fractalsdown variable } // ---------------------------------------------------------------------------- if ( fu > 0 // if candle has both upper && fl > 0 // , lower fractal ){ fractalsupprice = fu; // values stored fractalsdownprice = fl; fractalsup = false; // not, on nack, fractalsdown = false; // consider last fractal } } }
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