Explanation of a Ae

texoro 2014.07.04 08:13

    #property indicator_chart_window
    #property indicator_buffers 2
    #property indicator_color1 DarkGreen
    #property indicator_width1 3
    #property indicator_color2 Green
    #property indicator_width2 3

    extern string note1 = "Stochastic settings";
    extern string note2 = "default = Stoch(5,3,3)";
    extern int       KPeriod1     =  5;
    extern int       DPeriod1     =  3;
    extern int       Slowing1     =  3;
    extern string note3 = "0=sma, 1=ema, 2=smma, 3=lwma";
    extern int       MAMethod1    =   0;
    extern string note4 = "0=high/low, 1=close/close";
    extern int       PriceField1  =   1;

    extern string note5 = "--------------------------------------------";
    extern string note6 = "Arrow Type";
    extern string note7 = "0=Thick, 1=Thin, 2=Hollow, 3=Round";
    extern string note8 = "4=Fractal, 5=Diagonal Thin";
    extern string note9 = "6=Diagonal Thick, 7=Diagonal Hollow";
    extern string note10 = "8=Thumb, 9=Finger";
    extern int ArrowType=3;
    extern string note11 = "--------------------------------------------";
    extern string note12 = "turn on Alert = true; turn off = false";
    extern bool AlertOn = true;


    double CrossUp[];
    double CrossDown[];

    string AlertPrefix;
    string GetTimeFrameStr() {
       switch(Period())
       {
          case 1 : string TimeFrameStr="M1"; break;
          case 5 : TimeFrameStr="M5"; break;
          case 15 : TimeFrameStr="M15"; break;
          case 30 : TimeFrameStr="M30"; break;
          case 60 : TimeFrameStr="H1"; break;
          case 240 : TimeFrameStr="H4"; break;
          case 1440 : TimeFrameStr="D1"; break;
          case 10080 : TimeFrameStr="W1"; break;
          case 43200 : TimeFrameStr="MN1"; break;
          default : TimeFrameStr=Period();
       }
       return (TimeFrameStr);
       }

    //+------------------------------------------------------------------+
    //| Custom indicator initialization function                         |
    //+------------------------------------------------------------------+
    int init()
      {
    //---- indicators
       if (ArrowType == 0) {
          SetIndexStyle(0,DRAW_ARROW);
          SetIndexArrow(0, 233);
          SetIndexStyle(1,DRAW_ARROW);
          SetIndexArrow(1, 234);
       }
       else if (ArrowType == 1) {
          SetIndexStyle(0,DRAW_ARROW);
          SetIndexArrow(0, 225);
          SetIndexStyle(1,DRAW_ARROW);
          SetIndexArrow(1, 226);
       }
       else if (ArrowType == 2) {
          SetIndexStyle(0,DRAW_ARROW);
          SetIndexArrow(0, 241);
          SetIndexStyle(1,DRAW_ARROW);
          SetIndexArrow(1, 242);
       }
       else if (ArrowType == 3) {
          SetIndexStyle(0,DRAW_ARROW);
          SetIndexArrow(0, 221);
          SetIndexStyle(1,DRAW_ARROW);
          SetIndexArrow(1, 222);
       }
       else if (ArrowType == 4) {
          SetIndexStyle(0,DRAW_ARROW);
          SetIndexArrow(0, 217);
          SetIndexStyle(1,DRAW_ARROW);
          SetIndexArrow(1, 218);
       }
       else if (ArrowType == 5) {
          SetIndexStyle(0,DRAW_ARROW);
          SetIndexArrow(0, 228);
          SetIndexStyle(1,DRAW_ARROW);
          SetIndexArrow(1, 230);
       }
       else if (ArrowType == 6) {
          SetIndexStyle(0,DRAW_ARROW);
          SetIndexArrow(0, 236);
          SetIndexStyle(1,DRAW_ARROW);
          SetIndexArrow(1, 238);
       }
       else if (ArrowType == 7) {
          SetIndexStyle(0,DRAW_ARROW);
          SetIndexArrow(0, 246);
          SetIndexStyle(1,DRAW_ARROW);
          SetIndexArrow(1, 248);
       }
       else if (ArrowType == 8) {
          SetIndexStyle(0,DRAW_ARROW);
          SetIndexArrow(0, 67);
          SetIndexStyle(1,DRAW_ARROW);
          SetIndexArrow(1, 68);
       }
       else if (ArrowType == 9) {
          SetIndexStyle(0,DRAW_ARROW);
          SetIndexArrow(0, 71);
          SetIndexStyle(1,DRAW_ARROW);
          SetIndexArrow(1, 72);
       }

       SetIndexBuffer(0, CrossUp);
       SetIndexBuffer(1, CrossDown);
       AlertPrefix=Symbol()+" ("+GetTimeFrameStr()+"):  ";
    //----
       return(0);
      }
    //+------------------------------------------------------------------+
    //| Custom indicator deinitialization function                       |
    //+------------------------------------------------------------------+
    int deinit()
      {
    //----

    //----
       return(0);
      }
    //+------------------------------------------------------------------+
    bool NewBar()
    {
       static datetime lastbar;
       datetime curbar = Time[0];
       if(lastbar!=curbar)
       {
          lastbar=curbar;
          return (true);
         
       }
       else
       {
          return(false);
       }
    }   
    //+------------------------------------------------------------------+
    //| Custom indicator iteration function                              |
    //+------------------------------------------------------------------+
    int start() {
       int limit, i, counter;
       double stochastic1now, stochastic2now, stochastic1previous, stochastic2previous, stochastic1after, stochastic2after;
       double Range, AvgRange;
       int counted_bars=IndicatorCounted();
    //---- check for possible errors
       if(counted_bars<0) return(-1);
    //---- last counted bar will be recounted
       if(counted_bars>0) counted_bars--;

       limit=Bars-counted_bars;
       
       for(i = 0; i <= limit; i++) {
       
          counter=i;
          Range=0;
          AvgRange=0;
         
          stochastic1now = iStochastic(NULL,0,KPeriod1,DPeriod1,Slowing1,MAMethod1,PriceField1,0,i);
          stochastic1previous = iStochastic(NULL,0,KPeriod1,DPeriod1,Slowing1,MAMethod1,PriceField1,0,i+1);
          stochastic1after = iStochastic(NULL,0,KPeriod1,DPeriod1,Slowing1,MAMethod1,PriceField1,0,i-1);
          stochastic2now = iStochastic(NULL,0,KPeriod1,DPeriod1,Slowing1,MAMethod1,PriceField1,1,i);
          stochastic2previous = iStochastic(NULL,0,KPeriod1,DPeriod1,Slowing1,MAMethod1,PriceField1,1,i+1);
          stochastic2after = iStochastic(NULL,0,KPeriod1,DPeriod1,Slowing1,MAMethod1,PriceField1,1,i-1);
               
          if ((stochastic1now > stochastic2now) && (stochastic1previous < stochastic2previous) && (stochastic1after > stochastic2after))
                {
                       CrossUp[i] = Low[i] - Range*1.5;
                       if (AlertOn && NewBar()) {
                          Alert(AlertPrefix+"Segnale di call:",TimeToStr(CurTime(),TIME_DATE)," ",TimeHour(CurTime()),":",TimeMinute(CurTime()));
                          //Alert(AlertPrefix+"Stoch ("+KPeriod1+","+DPeriod1+","+Slowing1+") %K crosses UP %D\nBUY signal @ Ask = ",Ask,"; Bid = ",Bid,"\nDate & Time = ",TimeToStr(CurTime(),TIME_DATE)," ",TimeHour(CurTime()),":",TimeMinute(CurTime()));
                         
                                               }   
                        
          }
             
          if ((stochastic1now < stochastic2now) && (stochastic1previous > stochastic2previous) && (stochastic1after < stochastic2after)) {
                     CrossDown[i] = High[i] + Range*1.5;
                       if (AlertOn && NewBar()){
                           Alert(AlertPrefix+"Segnale di Put:",TimeToStr(CurTime(),TIME_DATE)," ",TimeHour(CurTime()),":",TimeMinute(CurTime()));
                          //Alert(AlertPrefix+"Stoch ("+KPeriod1+","+DPeriod1+","+Slowing1+") %K crosses DOWN %D\nSELL signal @ Ask = ",Ask,"; Bid = ",Bid,"\nDate & Time = ",TimeToStr(CurTime(),TIME_DATE)," ",TimeHour(CurTime()),":",TimeMinute(CurTime()));
                       }
                      
          }

       }
       
       return(0);
    }

Of this program I would like to know:
1) What is the function that brings up the arrows on the chart?
2) What does this line: CrossUp [i] = Low [i] - Range * 1.5 / Crossdown [i] = High [i] + Range * 1.5; what is the use?
3) I spiegatr function "bool NewBar ()"?
4) "Time [0]" is the last bar ?

William Roeder 2014.07.04 10:23 #1

texcs: Of this program I would like to know: 1) What is the function that brings up the arrows on the chart? 2) What does this line: CrossUp [i] = Low [i] - Range * 1.5 / Crossdown [i] = High [i] + Range * 1.5; what is the use? 3) I spiegatr function "bool NewBar ()"? 4) "Time [0]" is the last bar ?	None, the terminal draws the arrows. Tells the terminal if and where to draw the arrows English only. NewBar returns true at the first tick of a new bar. If(alert && NewBar) results in only one alert at the start of a bar not an alert per tick. Index=0 is the last bar. Each bar has Open[], High[], Low[], Close[], Time[], and (tick) Volume[]

Verbose coding	Simplified
if (ArrowType == 0) { SetIndexStyle(0,DRAW_ARROW); SetIndexArrow(0, 233); SetIndexStyle(1,DRAW_ARROW); SetIndexArrow(1, 234); } else if (ArrowType == 1) { SetIndexStyle(0,DRAW_ARROW); SetIndexArrow(0, 225); SetIndexStyle(1,DRAW_ARROW); SetIndexArrow(1, 226); } else if (ArrowType == 2) { SetIndexStyle(0,DRAW_ARROW); SetIndexArrow(0, 241); SetIndexStyle(1,DRAW_ARROW); SetIndexArrow(1, 242); } else if (ArrowType == 3) { SetIndexStyle(0,DRAW_ARROW); SetIndexArrow(0, 221); SetIndexStyle(1,DRAW_ARROW); SetIndexArrow(1, 222); } else if (ArrowType == 4) { SetIndexStyle(0,DRAW_ARROW); SetIndexArrow(0, 217); SetIndexStyle(1,DRAW_ARROW); SetIndexArrow(1, 218); } else if (ArrowType == 5) { SetIndexStyle(0,DRAW_ARROW); SetIndexArrow(0, 228); SetIndexStyle(1,DRAW_ARROW); SetIndexArrow(1, 230); } else if (ArrowType == 6) { SetIndexStyle(0,DRAW_ARROW); SetIndexArrow(0, 236); SetIndexStyle(1,DRAW_ARROW); SetIndexArrow(1, 238); } else if (ArrowType == 7) { SetIndexStyle(0,DRAW_ARROW); SetIndexArrow(0, 246); SetIndexStyle(1,DRAW_ARROW); SetIndexArrow(1, 248); } else if (ArrowType == 8) { SetIndexStyle(0,DRAW_ARROW); SetIndexArrow(0, 67); SetIndexStyle(1,DRAW_ARROW); SetIndexArrow(1, 68); } else if (ArrowType == 9) { SetIndexStyle(0,DRAW_ARROW); SetIndexArrow(0, 71); SetIndexStyle(1,DRAW_ARROW); SetIndexArrow(1, 72); }	int Arrow0[] = { 233, 225, 241, 221, 217, 228, 236, 246, 67, 71 } int Arrow1[] = { 234, 226, 242, 222, 218, 230, 238, 248, 68, 72 } SetIndexStyle(0,DRAW_ARROW); SetIndexArrow(0, Arrow0[ArrowType]); SetIndexStyle(1,DRAW_ARROW); SetIndexArrow(1, Arrow1[ArrowType]);

Verbose coding

Simplified

if (ArrowType == 0) {
   SetIndexStyle(0,DRAW_ARROW);
   SetIndexArrow(0, 233);
   SetIndexStyle(1,DRAW_ARROW);
   SetIndexArrow(1, 234);
}
else if (ArrowType == 1) {
   SetIndexStyle(0,DRAW_ARROW);
   SetIndexArrow(0, 225);
   SetIndexStyle(1,DRAW_ARROW);
   SetIndexArrow(1, 226);
}
else if (ArrowType == 2) {
   SetIndexStyle(0,DRAW_ARROW);
   SetIndexArrow(0, 241);
   SetIndexStyle(1,DRAW_ARROW);
   SetIndexArrow(1, 242);
}
else if (ArrowType == 3) {
   SetIndexStyle(0,DRAW_ARROW);
   SetIndexArrow(0, 221);
   SetIndexStyle(1,DRAW_ARROW);
   SetIndexArrow(1, 222);
}
else if (ArrowType == 4) {
   SetIndexStyle(0,DRAW_ARROW);
   SetIndexArrow(0, 217);
   SetIndexStyle(1,DRAW_ARROW);
   SetIndexArrow(1, 218);
}
else if (ArrowType == 5) {
   SetIndexStyle(0,DRAW_ARROW);
   SetIndexArrow(0, 228);
   SetIndexStyle(1,DRAW_ARROW);
   SetIndexArrow(1, 230);
}
else if (ArrowType == 6) {
   SetIndexStyle(0,DRAW_ARROW);
   SetIndexArrow(0, 236);
   SetIndexStyle(1,DRAW_ARROW);
   SetIndexArrow(1, 238);
}
else if (ArrowType == 7) {
   SetIndexStyle(0,DRAW_ARROW);
   SetIndexArrow(0, 246);
   SetIndexStyle(1,DRAW_ARROW);
   SetIndexArrow(1, 248);
}
else if (ArrowType == 8) {
   SetIndexStyle(0,DRAW_ARROW);
   SetIndexArrow(0, 67);
   SetIndexStyle(1,DRAW_ARROW);
   SetIndexArrow(1, 68);
}
else if (ArrowType == 9) {
   SetIndexStyle(0,DRAW_ARROW);
   SetIndexArrow(0, 71);
   SetIndexStyle(1,DRAW_ARROW);
   SetIndexArrow(1, 72);
}

int Arrow0[] = { 233, 225, 241, 221, 217, 228, 236, 246, 67, 71 }
int Arrow1[] = { 234, 226, 242, 222, 218, 230, 238, 248, 68, 72 }
SetIndexStyle(0,DRAW_ARROW);
SetIndexArrow(0, Arrow0[ArrowType]);
SetIndexStyle(1,DRAW_ARROW);
SetIndexArrow(1, Arrow1[ArrowType]);

How to code? Custom Indicator - Start Programming question using Close[]

texoro 2014.07.04 14:42 #2

Explain to me better "

Tells the terminal if and where to draw the arrows

William Roeder 2014.07.04 15:16 #3

texcs: Explain to me better Tells the terminal if and where to draw the arrows	If you leave a buffer element empty (EMPTY_VALUE) it doesn't draw the line or arrow If you put a value in the buffer, it draws the line or arrow at the price.

texoro 2014.07.04 15:59 #4

And explain to me how they are drawn green arrows?

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