linreg_v2
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This technical indicator is designed to analyze price action by calculating the mathematical trend of a currency pair or asset over a specific, user-defined period. Instead of simply looking at where the price is currently located, the script uses a method known as linear regression to determine the "path" the price is taking.
Core Logic and Functionality
1. Trend Calculation (Linear Regression) The heart of this script lies in its ability to perform statistical calculations on historical data. It looks at a specific window of time (the "Rperiod") and calculates the line of best fit for those price points. By determining the "slope" (the rate of change) and the "intercept" (the starting point), the script can project a theoretical trend line that smooths out minor market fluctuations.
2. Predictive Mapping The indicator takes these regression values and projects them onto your trading chart. This allows you to see a visual representation of the underlying momentum. It helps distinguish between random "noise" in the market and a sustained directional move by identifying where the price is trending relative to its recent mathematical average.
3. Dynamic Visual Feedback (Color Coding) To make this data actionable for a trader, the script translates complex math into clear visual cues:
- Directional Awareness: The indicator monitors the relationship between the current trend value and the previous one.
- Visual Differentiation: It uses a multi-color buffer system to highlight shifts in momentum. When the trend changes direction—moving higher or lower—the script updates the colors on the chart (Yellow, Green, and Red). This allows you to quickly identify whether the market momentum is strengthening, weakening, or reversing without having to manually calculate the values.
4. Real-Time Processing The script automatically loops through historical bars to ensure that every point on your chart is accurately mapped. As new price data arrives, it recalculates these figures instantly, providing a continuous stream of updated trend information.
Summary for the User
In simple terms, this tool acts as a "trend stabilizer." It looks at recent history, calculates the most likely direction the price wants to move, and draws that movement on your screen using distinct colors. This helps you filter out market distractions and focus on the primary movement of the asset.
/*-----------------------------+
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| Shared by www.Aptrafx.com |
| |
+------------------------------*/
//+------------------------------------------------------------------+
//| |
//| Copyright © 2004, MetaQuotes Software Corp. |
//| http://www.metaquotes.net/ |
//+------------------------------------------------------------------+
#property copyright "Copyright © 2005, FX Sniper "
#property link "http://www.metaquotes.net/"
//---- indicator settings
#property indicator_chart_window
#property indicator_buffers 3
#property indicator_color1 Yellow
#property indicator_color2 Green
#property indicator_color3 Red
//---- buffers
double ExtMapBuffer1[];
double ExtMapBuffer2[];
double ExtMapBuffer3[];
int width;
extern int Rperiod = 3;
extern int Draw4HowLongg = 1500;
int Draw4HowLong;
int shift;
int i;
int loopbegin;
double sumx[];
double sumy[],sumxy[],sumxsq[],sumysq[];
int length;
double lengthvar;
double sqsumx[], sqsumy[];
double tmp ;
double wt[],reglin[], slopem[], interceptb[], refr[], unk[];
int c;
//+------------------------------------------------------------------+
//| Custom indicator initialization function |
//+------------------------------------------------------------------+
int init()
{
//---- 2 additional buffers are used for counting.
IndicatorBuffers(5);
//---- drawing settings
SetIndexBuffer(2,ExtMapBuffer1);
SetIndexBuffer(1,ExtMapBuffer2);
SetIndexBuffer(0,ExtMapBuffer3);
SetIndexBuffer(3,sumx);
SetIndexBuffer(4,wt);
SetIndexStyle(2,DRAW_LINE,STYLE_SOLID,2);
SetIndexStyle(1,DRAW_LINE,STYLE_SOLID,2);
SetIndexStyle(0,DRAW_LINE,STYLE_SOLID,2);
//---- initialization done
return(0);
}
int start()
{ Draw4HowLong = Bars-Rperiod - 5;
length = Rperiod;
loopbegin = Draw4HowLong - length - 1;
for(shift = loopbegin; shift >= 0; shift--)
{
sumx[1] = 0;
sumy[1] = 0;
sumxy[1] = 0;
sumxsq[1] = 0;
sumysq[1] = 0;
for(i = length; i >= 1 ; i--)
{
tmp = 0;
// tmp = ( i - lengthvar)*Close[length-i+shift];
tmp=(length-i+1)*Close[length-i+shift];
sumxy[1]+=tmp;
sumy[1]+=Close[shift];
sumysq[1]+=Close[shift]*Close[shift];
sumxsq[1]+=i*i;
sumx[1]+=i;
}
sqsumx[shift]=sumx[1]*sumx[1];
sqsumy[shift]=sumy[1]*sumy[1];
slopem[shift]=(length*sumxy[1]-sumx[1]*sumy[1])/(length*sumxsq[1]-sqsumx[shift]);
interceptb[shift]=(sumy[1]-slopem[shift]*sumx[1])/length;
// refr[shift]=(length*sumxy[1]-sumx[1]*sumy[1])/sqrt((length*sumxsq[1]-sqsumx[shift])*(length*sumysq[1]-sqsumy[shift]));
reglin[shift]=length*slopem[shift]+interceptb[shift];
wt[shift] = reglin[shift];
//========== COLOR CODING ===========================================
ExtMapBuffer3[shift] = wt[shift]; //red
ExtMapBuffer2[shift] = wt[shift]; //green
ExtMapBuffer1[shift] = wt[shift]; //yellow
// for(c=loopbegin;c==shift;c++)
// {
if (wt[shift+1] > wt[shift])
{
ExtMapBuffer2[shift+1] = EMPTY_VALUE;
// ObjectCreate("smiley_face", OBJ_ARROW, 0, Time[shift], Low[shift]-Point*20);
// Print("time= ",Time[shift]);
// ObjectSet("smiley_face", OBJPROP_ARROWCODE, 242);
// ObjectSet("smiley_face", OBJPROP_COLOR , Red);
// ObjectSet("smiley_face", OBJPROP_WIDTH , 1);
// ObjectsRedraw();
//ExtMapBuffer3[shift+1] = EMPTY_VALUE;
//ExtMapBuffer3[shift+1] = EMPTY_VALUE;
}
else if (wt[shift+1] < wt[shift])
{
ExtMapBuffer1[shift+1] = EMPTY_VALUE; //-1 red/greem tight
//ExtMapBuffer3[shift+1] = EMPTY_VALUE;
}
else
{
ExtMapBuffer1[shift+1]=CLR_NONE;//EMPTY_VALUE;
ExtMapBuffer2[shift+1]=CLR_NONE;//EMPTY_VALUE;
}
}
return(0);
}
//+------------------------------------------------------------------+
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