SilverTrend Signal w[1].Alert

Author: SilverTrend rewritten by CrazyChart
SilverTrend Signal w[1].Alert
Miscellaneous
Implements a curve of type %1It issuies visual alerts to the screen
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SilverTrend Signal w[1].Alert
//+------------------------------------------------------------------+
//| SilverTrend_Signal.mq4                                           |
//| Ramdass - Conversion only                                        |
//+------------------------------------------------------------------+
#property copyright "SilverTrend  rewritten by CrazyChart"
#property link      "http://viac.ru/"
//----
#property indicator_chart_window
#property indicator_buffers 2
#property indicator_color1 Aqua
#property indicator_color2 Violet
//---- input parameters
extern int RISK=3;
extern int CountBars=350;
extern int NumberofAlerts=2;
int SSP=9;
int counter=0;
//---- buffers
double val1[];
double val2[];
//+------------------------------------------------------------------+
//| Custom indicator initialization function                         |
//+------------------------------------------------------------------+
int init()
  {
   string short_name;
//---- indicator line
   IndicatorBuffers(2);
   SetIndexStyle(0,DRAW_ARROW);
   SetIndexArrow(0,233);
   SetIndexStyle(1,DRAW_ARROW);
   SetIndexArrow(1,234);
   SetIndexBuffer(0,val1);
   SetIndexBuffer(1,val2);
//----
   return(0);
  }
//+------------------------------------------------------------------+
//| SilverTrend_Signal                                               |
//+------------------------------------------------------------------+
int start()
  {
   if (CountBars>=Bars) CountBars=Bars;
   SetIndexDrawBegin(0,Bars-CountBars+SSP);
   SetIndexDrawBegin(1,Bars-CountBars+SSP);
   int i,shift,counted_bars=IndicatorCounted();
   int i1,i2,K;
   double Range,AvgRange,smin,smax,SsMax,SsMin,price;
   bool uptrend,old;
//----
   if(Bars<=SSP+1) return(0);
//---- initial zero
   if(counted_bars<SSP+1)
     {
      for(i=1;i<=SSP;i++) val1[CountBars-i]=0.0;
      for(i=1;i<=SSP;i++) val2[CountBars-i]=0.0;
     }
//----
   K=33-RISK;
   for(shift=CountBars-SSP; shift>=0; shift--)
     {
      Range=0;
      AvgRange=0;
      for(i1=shift; i1<=shift+SSP; i1++)
        {AvgRange=AvgRange+MathAbs(High[i1]-Low[i1]);
        }
      Range=AvgRange/(SSP+1);
//----
      SsMax=High[shift]; SsMin=Low[shift];
      for(i2=shift;i2<=shift+SSP-1;i2++)
        {
         price=High[i2];
         if(SsMax<price) SsMax=price;
         price=Low[i2];
         if(SsMin>=price)  SsMin=price;
        }
      smin=SsMin+(SsMax-SsMin)*K/100;
      smax=SsMax-(SsMax-SsMin)*K/100;
      val1[shift]=0;
      val2[shift]=0;
      if (Close[shift]<smin)
        {
         uptrend=false;
        }
      if (Close[shift]>smax)
        {
         uptrend=true;
        }
      if (uptrend!=old && uptrend==true)
        {
         val1[shift]=Low[shift]-Range*0.5;
         counter=0;
         if (shift==0 && counter<=NumberofAlerts)
           {
            Alert("Silver Trend ",Period()," ",Symbol()," BUY");
            counter=counter+1;
           }
        }
      if (uptrend!=old && uptrend==false)
        {
         counter=0;
         val2[shift]=High[shift]+Range*0.5;
         if (shift==0 && counter<=NumberofAlerts)
           {
            Alert("Silver Trend ",Period()," ",Symbol()," SELL");
            counter=counter+1;
           }
        }
      Comment(shift);
      old=uptrend;
     }
   return(0);
  }
//+------------------------------------------------------------------+

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