How to modify the repaint of an indicator

Xiaolei Liu 2022.04.20 08:18

Hi ,friend , i have a indicator , but it is repaint ,how to not repaint ?

Following is the source code:

 #property  copyright "whoever"

#property  link      "whatever"



#property  indicator_separate_window

#property  indicator_buffers 5

#property  indicator_color1  LimeGreen

#property  indicator_color2  Red

#property  indicator_color3  Gold

#property  indicator_color4  LimeGreen

#property  indicator_color5  Red

#property  indicator_width3  2

#property  indicator_width4  2

#property  indicator_width5  2

 

extern int period=35;

extern int smooth=10; 

extern bool DoAlert=true;

extern bool alertMail=false;

datetime lastAlertTime;





double         ExtBuffer0[];

double         ExtBuffer1[];

double         ExtBuffer2[];

double         ExtBuffer3[];

double         ExtBuffer4[];

double         ExtBuffer5[];

double         ExtBufferh1[];

double         ExtBufferh2[];



#define LinesIdentifier "signalLines"

int init()

{

   IndicatorBuffers(8);

   SetIndexBuffer(0,ExtBufferh1); SetIndexStyle(0,DRAW_HISTOGRAM);

   SetIndexBuffer(1,ExtBufferh2); SetIndexStyle(1,DRAW_HISTOGRAM);

   SetIndexBuffer(2,ExtBuffer3);

   SetIndexBuffer(3,ExtBuffer4);

   SetIndexBuffer(4,ExtBuffer5);

   SetIndexBuffer(5,ExtBuffer0);

   SetIndexBuffer(6,ExtBuffer1);

   SetIndexBuffer(7,ExtBuffer2);



   lastAlertTime = Time[1];



   IndicatorShortName("Solar wind joy :)");

   return(0);

}

int deinit()

{

   int lookForLength = StringLen(LinesIdentifier);

   for (int i=ObjectsTotal(); i>=0; i--)

      {

         string name = ObjectName(i);

         if (StringSubstr(name,0,lookForLength)==LinesIdentifier) ObjectDelete(name);

      }

   return(0);

}





int start()

{

   //int     period=10;

   int    limit;

   double prev,current,old;

   double Value=0,Value1=0,Value2=0,Fish=0,Fish1=0,Fish2=0;

   double price;

   double MinL=0;

   double MaxH=0;  

   

   int counted_bars=IndicatorCounted();

   if(counted_bars<0) return(-1);

   if(counted_bars>0) counted_bars--;

   limit=Bars-counted_bars;

   string sAlertMsg;

      

   //limit=Bars-1;





   for(int i=0; i<limit; i++)

    {  MaxH = High[Highest(NULL,0,MODE_HIGH,period,i)];

       MinL = Low[Lowest(NULL,0,MODE_LOW,period,i)];

      price = (High[i]+Low[i])/2;

      Value = 0.33*2*((price-MinL)/(MaxH-MinL)-0.5) + 0.67*Value1;     

      Value=MathMin(MathMax(Value,-0.999),0.999); 

      ExtBuffer0[i]=0.5*MathLog((1+Value)/(1-Value))+0.5*Fish1;

      Value1=Value;

      Fish1=ExtBuffer0[i];

         if (ExtBuffer0[i]>0) ExtBuffer1[i]=10; else ExtBuffer1[i]=-10;      

    }



   for(i=limit; i>=0; i--)

   {

      double sum  = 0;

      double sumw = 0;



      for(int k=0; k<smooth && (i+k)<Bars; k++)

      {

         double weight = smooth-k;

                sumw  += weight;

                sum   += weight*ExtBuffer1[i+k];  

      }             

      if (sumw!=0)

            ExtBuffer2[i] = sum/sumw;

      else  ExtBuffer2[i] = 0;

   }      

   for(i=0; i<=limit; i++)

   {

      sum  = 0;

      sumw = 0;



      for(k=0; k<smooth && (i-k)>=0; k++)

      {

         weight = smooth-k;

                sumw  += weight;

                sum   += weight*ExtBuffer2[i-k];

      }             

      if (sumw!=0)

            ExtBuffer3[i] = sum/sumw;

      else  ExtBuffer3[i] = 0;

   }      

   for(i=limit; i>=0; i--)

   {

      ExtBuffer4[i]=EMPTY_VALUE;

      ExtBuffer5[i]=EMPTY_VALUE;

      ExtBufferh1[i]=EMPTY_VALUE;

      ExtBufferh2[i]=EMPTY_VALUE;

      if (ExtBuffer3[i]>0) { ExtBuffer4[i]=ExtBuffer3[i]; ExtBufferh1[i]=ExtBuffer3[i]; }

      if (ExtBuffer3[i]<0) { ExtBuffer5[i]=ExtBuffer3[i]; ExtBufferh2[i]=ExtBuffer3[i]; }

      

      if (ExtBuffer3[i+1] < 0 && ExtBuffer3[i] > 0)

      {

         if (DoAlert && i<5 && lastAlertTime!=Time[0])

         {

            sAlertMsg="Solar Wind - "+Symbol()+" "+TF2Str(Period())+": cross UP";

            if (DoAlert)     Alert(sAlertMsg);

            lastAlertTime = Time[0];  

            if (alertMail)   SendMail(sAlertMsg, "MT4 Alert!\n" + TimeToStr(TimeCurrent(),TIME_DATE|TIME_SECONDS )+"\n"+sAlertMsg);   

         }

      }

      else if( ExtBuffer3[i+1] > 0 && ExtBuffer3[i] < 0)

      {

         if (i<5 && lastAlertTime!=Time[0])

         {

            sAlertMsg="Solar Wind - "+Symbol()+" "+TF2Str(Period())+": cross DOWN";

            if (DoAlert)     Alert(sAlertMsg);

            lastAlertTime = Time[0];  

            if (alertMail)   SendMail(sAlertMsg, "MT4 Alert!\n" + TimeToStr(TimeCurrent(),TIME_DATE|TIME_SECONDS )+"\n"+sAlertMsg);   

         }

                     

      }

      

      

   }

   return(0);

}

// function: TF2Str()

// Description: Convert time-frame to a string

//-----------------------------------------------------------------------------

string TF2Str(int iPeriod) {

  switch(iPeriod) {

    case PERIOD_M1: return("M1");

    case PERIOD_M5: return("M5");

    case PERIOD_M15: return("M15");

    case PERIOD_M30: return("M30");

    case PERIOD_H1: return("H1");

    case PERIOD_H4: return("H4");

    case PERIOD_D1: return("D1");

    case PERIOD_W1: return("W1");

    case PERIOD_MN1: return("MN1");

    default: return("M"+iPeriod);

  }

}

William Roeder 2022.04.20 13:01 #1

Xiaolei Liu: but it is repaint ,how to not repaint ?

  for(int i=0; i<limit; i++)

Change the two loops to count down.

   for(i=limit; i>=0; i--)

Xiaolei Liu 2022.04.20 15:33 #2

William Roeder #:

Change the two loops to count down.

very thanks ,i will try it.

Xiaolei Liu 2022.04.20 16:01 #3

William Roeder #:

Change the two loops to count down.

I modified it like this, but the chart can't display normally. I found that there are two places in the original code that are also count down.

Xiaolei Liu 2022.04.26 07:36 #4

Can anyone solve this problem ？

Edvaldo Silva 2022.04.26 18:15 #5

Como faço para indexar 2 pares de forex para long short?

Fernando Carreiro 2022.04.26 18:19 #6

Edvaldo Silva #: Como faço para indexar 2 pares de forex para long short?

English: This is the English forum. Please write in English. If you prefer you can use the Portuguese forum.

Português; Este é o fórum em inglês. Escreva por favor em inglês. Se preferir pode usar o fórum português.

Xiaolei Liu 2022.04.28 06:12 #7

Edvaldo Silva #:
Como faço para indexar 2 pares de forex para long short?

I don't quite understand. How should I modify it?

Shino Unada 2022.04.29 00:17 #8

for(int i=0; i<limit; i++)
{  MaxH = High[Highest(NULL,0,MODE_HIGH,period,i)];
   MinL = Low[Lowest(NULL,0,MODE_LOW,period,i)];
   price = (High[i]+Low[i])/2;
   ExtBuffer0[i] = (price - MinL) / (MaxH - MinL) - 0.5;

   /*Value = 0.33*2*((price-MinL)/(MaxH-MinL)-0.5) + 0.67*Value1;     
   Value=MathMin(MathMax(Value,-0.999),0.999); 
   ExtBuffer0[i]=0.5*MathLog((1+Value)/(1-Value))+0.5*Fish1;
   Value1=Value;
   Fish1=ExtBuffer0[i];*/

   if (ExtBuffer0[i]>0) ExtBuffer1[i]=10; else ExtBuffer1[i]=-10;      
}

for(i=limit; i>=0; i--)
{
   double sum  = 0;
   double sumw = 0;

   for(int k=0; k<smooth && (i+k)<Bars; k++)
   {
      double weight = smooth-k;
             sumw  += weight;
             sum   += weight*ExtBuffer1[i+k];  
   }
                
   if (sumw!=0)
      ExtBuffer3[i] = sum/sumw;
   else  ExtBuffer3[i] = 0;
}      

/*for(i=0; i<=limit; i++)
{
   sum  = 0;
   sumw = 0;
   for(k=0; k<smooth && (i-k)>=0; k++)
   {
      weight = smooth-k;
      sumw  += weight;
      sum   += weight*ExtBuffer2[i-k];
   }             
   if (sumw!=0)
      ExtBuffer3[i] = sum/sumw;
   else  ExtBuffer3[i] = 0;
}*/

The zero-lag property is lost.

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