Double stochastic with mql4

[Quang Pham]

Dear All;

Currently, I have the code of stochastic with the input parameter 5/3/3, I want to have the input parameter is 12/4/4 and more, how is the code, everyone help me

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

//|                                                   Stochastic.mq4 |

//|                   Copyright 2005-2014, MetaQuotes Software Corp. |

//|                                             https://www.mql5.com |

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

#property copyright   "2005-2014, MetaQuotes Software Corp."

#property link        "https://www.mql5.com"

#property description "Stochastic Oscillator"

#property strict



#property indicator_separate_window

#property indicator_minimum    0

#property indicator_maximum    100

#property indicator_buffers    2

#property indicator_color1     LightSeaGreen

#property indicator_color2     Red

#property indicator_level1     20.0

#property indicator_level2     80.0

#property indicator_levelcolor clrSilver

#property indicator_levelstyle STYLE_DOT

//--- input parameters

input int InpKPeriod=5; // K Period

input int InpDPeriod=3; // D Period

input int InpSlowing=3; // Slowing

//--- buffers

double ExtMainBuffer[];

double ExtSignalBuffer[];

double ExtHighesBuffer[];

double ExtLowesBuffer[];

//---

int draw_begin1=0;

int draw_begin2=0;

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

//| Custom indicator initialization function                         |

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

int OnInit(void)

  {

   string short_name;

//--- 2 additional buffers are used for counting

   IndicatorBuffers(4);

   SetIndexBuffer(2,ExtHighesBuffer);

   SetIndexBuffer(3,ExtLowesBuffer);

//--- indicator lines

   SetIndexStyle(0,DRAW_LINE);

   SetIndexBuffer(0,ExtMainBuffer);

   SetIndexStyle(1,DRAW_LINE);

   SetIndexBuffer(1,ExtSignalBuffer);

//--- name for DataWindow and indicator subwindow label

   short_name="Sto("+IntegerToString(InpKPeriod)+","+IntegerToString(InpDPeriod)+","+IntegerToString(InpSlowing)+")";

   IndicatorShortName(short_name);

   SetIndexLabel(0,short_name);

   SetIndexLabel(1,"Signal");

//---

   draw_begin1=InpKPeriod+InpSlowing;

   draw_begin2=draw_begin1+InpDPeriod;

   SetIndexDrawBegin(0,draw_begin1);

   SetIndexDrawBegin(1,draw_begin2);

//--- initialization done

   return(INIT_SUCCEEDED);

  }

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

//| Stochastic oscillator                                            |

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

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    i,k,pos;

//--- check for bars count

   if(rates_total<=InpKPeriod+InpDPeriod+InpSlowing)

      return(0);

//--- counting from 0 to rates_total

   ArraySetAsSeries(ExtMainBuffer,false);

   ArraySetAsSeries(ExtSignalBuffer,false);

   ArraySetAsSeries(ExtHighesBuffer,false);

   ArraySetAsSeries(ExtLowesBuffer,false);

   ArraySetAsSeries(low,false);

   ArraySetAsSeries(high,false);

   ArraySetAsSeries(close,false);

//---

   pos=InpKPeriod-1;

   if(pos+1<prev_calculated)

      pos=prev_calculated-2;

   else

     {

      for(i=0; i<pos; i++)

        {

         ExtLowesBuffer[i]=0.0;

         ExtHighesBuffer[i]=0.0;

        }

     }

//--- calculate HighesBuffer[] and ExtHighesBuffer[]

   for(i=pos; i<rates_total && !IsStopped(); i++)

     {

      double dmin=1000000.0;

      double dmax=-1000000.0;

      for(k=i-InpKPeriod+1; k<=i; k++)

        {

         if(dmin>low[k])

            dmin=low[k];

         if(dmax<high[k])

            dmax=high[k];

        }

      ExtLowesBuffer[i]=dmin;

      ExtHighesBuffer[i]=dmax;

     }

//--- %K line

   pos=InpKPeriod-1+InpSlowing-1;

   if(pos+1<prev_calculated)

      pos=prev_calculated-2;

   else

     {

      for(i=0; i<pos; i++)

         ExtMainBuffer[i]=0.0;

     }

//--- main cycle

   for(i=pos; i<rates_total && !IsStopped(); i++)

     {

      double sumlow=0.0;

      double sumhigh=0.0;

      for(k=(i-InpSlowing+1); k<=i; k++)

        {

         sumlow +=(close[k]-ExtLowesBuffer[k]);

         sumhigh+=(ExtHighesBuffer[k]-ExtLowesBuffer[k]);

        }

      if(sumhigh==0.0)

         ExtMainBuffer[i]=100.0;

      else

         ExtMainBuffer[i]=sumlow/sumhigh*100.0;

     }

//--- signal

   pos=InpDPeriod-1;

   if(pos+1<prev_calculated)

      pos=prev_calculated-2;

   else

     {

      for(i=0; i<pos; i++)

         ExtSignalBuffer[i]=0.0;

     }

   for(i=pos; i<rates_total && !IsStopped(); i++)

     {

      double sum=0.0;

      for(k=0; k<InpDPeriod; k++)

         sum+=ExtMainBuffer[i-k];

      ExtSignalBuffer[i]=sum/InpDPeriod;

     }

//--- OnCalculate done. Return new prev_calculated.

   return(rates_total);

  }

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

[Keith Watford]

//--- input parameters

input int InpKPeriod=5; // K Period

input int InpDPeriod=3; // D Period

input int InpSlowing=3; // Slowing

Change the input parameters.

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