//////////////////////////////////////////////////////////////////////
//
// LinearRegression.mq4
// Copyright © 2008 Antonuk Oleg
//
//////////////////////////////////////////////////////////////////////
#property copyright "Copyright © 2008 Antonuk Oleg"
#property link "antonukoleg@gmail.com"
#property indicator_chart_window
#property indicator_buffers 1
#property indicator_width1 1
#property indicator_color1 Gold
extern int barsToCount=50;
double buffer0[];
//////////////////////////////////////////////////////////////////////
int init()
{
IndicatorShortName("linearRegression");
SetIndexStyle(0,DRAW_LINE);
SetIndexBuffer(0,buffer0);
SetIndexEmptyValue(0,0.0);
return(0);
}
//////////////////////////////////////////////////////////////////////
int deinit()
{
return(0);
}
//////////////////////////////////////////////////////////////////////
int start()
{
// calculate price values
double a,b,c,
sumy=0.0,
sumx=0.0,
sumxy=0.0,
sumx2=0.0;
for(int i=0; i<barsToCount; i++)
{
sumy+=Close[i];
sumxy+=Close[i]*i;
sumx+=i;
sumx2+=i*i;
}
c=sumx2*barsToCount-sumx*sumx;
if(c==0.0)
{
Alert("LinearRegression error: can\'t resolve equation");
return;
}
b=(sumxy*barsToCount-sumx*sumy)/c;
a=(sumy-sumx*b)/barsToCount;
// drawing Linear regression trendline in indicator buffer
for(int x=0;x<barsToCount;x++)
buffer0[x]=a+b*x;
// clear last bar
buffer0[x]=0.0;
return(0);
}
Sample
Analysis
Market Information Used:
Series array that contains close prices for each bar
Indicator Curves created:
Implements a curve of type DRAW_LINE
Indicators Used:
Custom Indicators Used:
Order Management characteristics:
Other Features:
It issuies visual alerts to the screen