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想把RSI变成双线的，麻烦大神帮解决！谢谢！

楼主收藏举报帖子创建时间: 2019-05-05 13:35 回复：0 关注量：563

//+------------------------------------------------------------------+
//|                                                       RSI.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 "Relative Strength Index"
#property strict
#property indicator_separate_window
#property indicator_minimum 0
#property indicator_maximum 100
#property indicator_buffers 2
#property indicator_color1    DodgerBlue
#property indicator_color2    DarkOrange
#property indicator_level1    5.0
#property indicator_level2    95.0
#property indicator_level3    10.0
#property indicator_level4    90.0
#property indicator_levelcolor clrDimGray
#property indicator_levelstyle STYLE_DOT
//--- input parameters
input int InpRSIPeriod=4; // RSI Period
//--- buffers
double ExtRSIBuffer[];
double ExtPosBuffer[];
double ExtNegBuffer[];
//+------------------------------------------------------------------+
//| Custom indicator initialization function                      |
//+------------------------------------------------------------------+
int onInit(void)
{
string short_name;
//--- 2 additional buffers are used for counting.
IndicatorBuffers(3);
SetIndexBuffer(0,ExtRSIBuffer);
SetIndexBuffer(1,ExtPosBuffer);
SetIndexBuffer(2,ExtNegBuffer);
//--- indicator line
SetIndexStyle(0,DRAW_LINE);
SetIndexBuffer(0,ExtRSIBuffer);
//--- name for DataWindow and indicator subwindow label
short_name="RSI("+string(InpRSIPeriod)+")";
IndicatorShortName(short_name);
SetIndexLabel(0,short_name);
//--- check for input
if(InpRSIPeriod<2)
   {
   Print("Incorrect value for input variable InpRSIPeriod = ",InpRSIPeriod);
   return(INIT_FAILED);
   }
//---
SetIndexDrawBegin(0,InpRSIPeriod);
//--- initialization done
return(INIT_SUCCEEDED);
}
//+------------------------------------------------------------------+
//| Relative Strength Index                                        |
//+------------------------------------------------------------------+
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,pos;
double diff;
//---
if(Bars<=InpRSIPeriod || InpRSIPeriod<2)
   return(0);
//--- counting from 0 to rates_total
ArraySetAsSeries(ExtRSIBuffer,false);
ArraySetAsSeries(ExtPosBuffer,false);
ArraySetAsSeries(ExtNegBuffer,false);
ArraySetAsSeries(close,false);
//--- preliminary calculations
pos=prev_calculated-1;
if(pos<=InpRSIPeriod)
   {
   //--- first RSIPeriod values of the indicator are not calculated
   ExtRSIBuffer[0]=0.0;
   ExtPosBuffer[0]=0.0;
   ExtNegBuffer[0]=0.0;
   double sump=0.0;
   double sumn=0.0;
   for(i=1; i<=InpRSIPeriod; i++)
      {
      ExtRSIBuffer=0.0;
      ExtPosBuffer=0.0;
      ExtNegBuffer=0.0;
      diff=close-close[i-1];
      if(diff>0)
         sump+=diff;
      else
         sumn-=diff;
      }
   //--- calculate first visible value
   ExtPosBuffer[InpRSIPeriod]=sump/InpRSIPeriod;
   ExtNegBuffer[InpRSIPeriod]=sumn/InpRSIPeriod;
   if(ExtNegBuffer[InpRSIPeriod]!=0.0)
      ExtRSIBuffer[InpRSIPeriod]=100.0-(100.0/(1.0+ExtPosBuffer[InpRSIPeriod]/ExtNegBuffer[InpRSIPeriod]));
   else
      {
      if(ExtPosBuffer[InpRSIPeriod]!=0.0)
         ExtRSIBuffer[InpRSIPeriod]=100.0;
      else
         ExtRSIBuffer[InpRSIPeriod]=50.0;
      }
   //--- prepare the position value for main calculation
   pos=InpRSIPeriod+1;
   }
//--- the main loop of calculations
for(i=pos; i<rates_total && !IsStopped(); i++)
   {
   diff=close-close[i-1];
   ExtPosBuffer=(ExtPosBuffer[i-1]*(InpRSIPeriod-1)+(diff>0.0?diff:0.0))/InpRSIPeriod;
   ExtNegBuffer=(ExtNegBuffer[i-1]*(InpRSIPeriod-1)+(diff<0.0?-diff:0.0))/InpRSIPeriod;
   if(ExtNegBuffer!=0.0)
      ExtRSIBuffer=100.0-100.0/(1+ExtPosBuffer/ExtNegBuffer);
   else
      {
      if(ExtPosBuffer!=0.0)
         ExtRSIBuffer=100.0;
      else
         ExtRSIBuffer=50.0;
      }
   }
//---
return(rates_total);
}
//+------------------------------------------------------------------+