Traders Dynamic Index Visual Alerts_v2
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The Traders Dynamic Index (TDI) is a comprehensive hybrid trading tool designed to help market participants visualize three critical components of price action simultaneously: trend direction, market strength, and volatility. Rather than relying on a single data point, it synthesizes several different types of technical analysis into one cohesive visual display.
Core Visual Components
The indicator uses four distinct visual elements to communicate different layers of market information:
- Price Line (Green): This represents the immediate movement of price based on a Relative Strength Index (RSI) calculation. It is your primary indicator for identifying the current momentum.
- Trade Signal Line (Red): This acts as a smoothed average of the Price Line. The relationship between the Green and Red lines indicates the immediate direction of price action.
- Volatility Bands (Blue Lines): These bands measure market "stretch." They expand when the market is trending strongly and contract when the market is moving sideways or consolidating.
- Market Base Line (Yellow Line): This serves as the "equilibrium" of the market, providing a central reference point for overall trend direction.
How to Interpret the Logic
1. Trend Direction
The tool distinguishes between immediate momentum and the broader market structure:
- Immediate Trend: If the Green line is above the Red line, price action is moving up; if it is below, price action is moving down.
- Overall Trend: The Yellow line tracks the general direction. Traders typically look for the Yellow line to bounce off specific boundaries (32 and 68) to identify potential reversals. Generally, price above the Yellow line suggests a "Long" bias, while price below it suggests a "Short" bias.
2. Market Strength and Volatility
The indicator provides clues on whether a move has "legs" or is losing steam:
- Immediate Strength: This is judged by the slope of the Green line—a steep slope indicates strong momentum, while a flat or moderate slope suggests weakness.
- Overall Strength: This is observed through the Blue Volatility Bands. When they expand significantly, it confirms a strong trend. Conversely, when they are very tight and narrow, it often signals that a major economic event or news spike is imminent.
3. Trade Entry Signals
The script classifies trade opportunities based on three different levels of confidence:
- Scalping: The simplest entry, looking for the Green line to cross over the Red line.
- Active Trading: Requires the Green/Red crossover to occur while also being aligned with the Yellow Market Base Line.
- Moderate Trading: A more conservative approach requiring the lines to be aligned with both the Yellow Base Line and a specific 50-level midpoint.
4. Exit Strategies
The logic provides clear exit cues to help manage risk:
- Standard exits occur when the Green line crosses back over the Red line in the opposite direction of the trade.
- For high-volatility moves, an exit can be considered if the Green line crosses outside of the Blue Volatility Bands and then returns back inside.
Indicators Used
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Traders Dynamic Index Visual Alerts_v2
//+------------------------------------------------------------------+
//| Traders Dynamic Index.mq4 |
//| Copyright © 2006, Dean Malone |
//| www.compassfx.com |
//+------------------------------------------------------------------+
//+------------------------------------------------------------------+
//| |
//| Traders Dynamic Index |
//| |
//| This hybrid indicator is developed to assist traders in their |
//| ability to decipher and monitor market conditions related to |
//| trend direction, market strength, and market volatility. |
//| |
//| Even though comprehensive, the T.D.I. is easy to read and use. |
//| |
//| Green line = RSI Price line |
//| Red line = Trade Signal line |
//| Blue lines = Volatility Band |
//| Yellow line = Market Base Line |
//| |
//| Trend Direction - Immediate and Overall |
//| Immediate = Green over Red...price action is moving up. |
//| Red over Green...price action is moving down. |
//| |
//| Overall = Yellow line trends up and down generally between the |
//| lines 32 & 68. Watch for Yellow line to bounces off |
//| these lines for market reversal. Trade long when |
//| price is above the Yellow line, and trade short when |
//| price is below. |
//| |
//| Market Strength & Volatility - Immediate and Overall |
//| Immediate = Green Line - Strong = Steep slope up or down. |
//| Weak = Moderate to Flat slope. |
//| |
//| Overall = Blue Lines - When expanding, market is strong and |
//| trending. When constricting, market is weak and |
//| in a range. When the Blue lines are extremely tight |
//| in a narrow range, expect an economic announcement |
//| or other market condition to spike the market. |
//| |
//| |
//| Entry conditions |
//| Scalping - Long = Green over Red, Short = Red over Green |
//| Active - Long = Green over Red & Yellow lines |
//| Short = Red over Green & Yellow lines |
//| Moderate - Long = Green over Red, Yellow, & 50 lines |
//| Short= Red over Green, Green below Yellow & 50 line|
//| |
//| Exit conditions* |
//| Long = Green crosses below Red |
//| Short = Green crosses above Red |
//| * If Green crosses either Blue lines, consider exiting when |
//| when the Green line crosses back over the Blue line. |
//| |
//| |
//| IMPORTANT: The default settings are well tested and proven. |
//| But, you can change the settings to fit your |
//| trading style. |
//| |
//| Price & Line Type settings: |
//| RSI Price settings |
//| 0 = Close price [DEFAULT] |
//| 1 = Open price. |
//| 2 = High price. |
//| 3 = Low price. |
//| 4 = Median price, (high+low)/2. |
//| 5 = Typical price, (high+low+close)/3. |
//| 6 = Weighted close price, (high+low+close+close)/4. |
//| |
//| RSI Price Line & Signal Line Type settings |
//| 0 = Simple moving average [DEFAULT] |
//| 1 = Exponential moving average |
//| 2 = Smoothed moving average |
//| 3 = Linear weighted moving average |
//| |
//| Good trading, |
//| |
//| Dean |
//+------------------------------------------------------------------+
#property indicator_separate_window
#property indicator_buffers 7
//----
#property indicator_color1 Black
#property indicator_color2 MediumBlue
#property indicator_color3 Yellow
#property indicator_color4 MediumBlue
#property indicator_color5 Green
#property indicator_color6 Red
#property indicator_color7 Aqua
#property indicator_style7 2
//#property indicator_maximum 85
//#property indicator_minimum 15
extern bool Show_VISUAL_Alerts=true;
extern int SHIFT_Sideway=0;
extern int SHIFT_Up_Down=0;
extern int RSI_Period=13; //8-25
extern int RSI_Price=0; //0-6
extern int Volatility_Band=34; //20-40
extern int RSI_Price_Line=2;
extern int RSI_Price_Type=0; //0-3
extern int Trade_Signal_Line=7;
extern bool SHOW_Trade_Signal_Line2=true;
extern int Trade_Signal_Line2=18;
extern int Trade_Signal_Type=0; //0-3
//----
#define UPPERLINE "UPPERLINE"
#define MEDLINE "MEDLINE"
#define LOWERLINE "LOWERLINE"
//----
double RSIBuf[],UpZone[],MdZone[],DnZone[],MaBuf[],MbBuf[],McBuf[];
//+------------------------------------------------------------------+
//| |
//+------------------------------------------------------------------+
int init()
{
IndicatorShortName("Traders Dynamic Index Visual");
SetIndexBuffer(0,RSIBuf);
SetIndexBuffer(1,UpZone);
SetIndexBuffer(2,MdZone);
SetIndexBuffer(3,DnZone);
SetIndexBuffer(4,MaBuf);
SetIndexBuffer(5,MbBuf);
//----
if(SHOW_Trade_Signal_Line2 ==true){SHOW_Trade_Signal_Line2=DRAW_LINE; }
else {SHOW_Trade_Signal_Line2=DRAW_NONE; }
SetIndexStyle(6,SHOW_Trade_Signal_Line2);
SetIndexBuffer(6,McBuf);
//
SetIndexStyle(0,DRAW_NONE);
SetIndexStyle(1,DRAW_LINE);
SetIndexStyle(2,DRAW_LINE,0,2);
SetIndexStyle(3,DRAW_LINE);
SetIndexStyle(4,DRAW_LINE,0,2);
SetIndexStyle(5,DRAW_LINE,0,1);
//
SetIndexLabel(0,NULL);
SetIndexLabel(1,"VB High");
SetIndexLabel(2,"Market Base Line");
SetIndexLabel(3,"VB Low");
SetIndexLabel(4,"RSI Price Line");
SetIndexLabel(5,"Trade Signal Line");
SetIndexLabel(6,"Trade Signal2 Line");
/* SetLevelValue(0,50);
SetLevelValue(1,68);
SetLevelValue(2,32);
SetLevelStyle(STYLE_DOT,1,DarkSlateGray);*/
return(0);
}
//+------------------------------------------------------------------+
//| |
//+------------------------------------------------------------------+
int deinit()
{
ObjectsDeleteAll(0,OBJ_TREND);
ObjectDelete("TDI_SIG");ObjectDelete("TDI_SIG1");ObjectDelete("TDI_SIG2");
ObjectDelete("TDI_SIG3");ObjectDelete("TDI_SIG4");ObjectDelete("TDI_SIG5");
ObjectDelete("TDI_SIG6");ObjectDelete("TDI_SIG7");ObjectDelete("TDI_SIG8");
ObjectDelete("TDI_SIG9");
//----
return(0);
}
//+------------------------------------------------------------------+
//| |
//+------------------------------------------------------------------+
int start()
{
CreateLEVEL();
}
//+------------------------------------------------------------------+
//| |
//+------------------------------------------------------------------+
void Createline(string objName, double start, double end, color clr)
{
ObjectCreate(objName, OBJ_TREND,WindowFind("Traders Dynamic Index Visual"),0, start, Time[0], end);
ObjectSet(objName, OBJPROP_COLOR, clr);
ObjectSet(objName, OBJPROP_STYLE, 2);
ObjectSet(objName, OBJPROP_RAY, false);
}
//+------------------------------------------------------------------+
//| |
//+------------------------------------------------------------------+
void DeleteCreateline()
{
ObjectDelete(UPPERLINE);ObjectDelete(LOWERLINE);ObjectDelete(MEDLINE);
}
//+------------------------------------------------------------------+
//| |
//+------------------------------------------------------------------+
void CreateLEVEL()
{
DeleteCreateline();
Createline(UPPERLINE, 68, 68,C'70,70,70');
Createline(LOWERLINE, 50, 50,C'00,70,00');
Createline(MEDLINE, 32, 32,C'70,70,70');
//----
double MA,RSI[];
ArrayResize(RSI,Volatility_Band);
int counted_bars=IndicatorCounted();
int limit=Bars-counted_bars-1;
for(int i=limit; i>=0; i--)
{
RSIBuf[i]=(iRSI(NULL,0,RSI_Period,RSI_Price,i));
MA=0;
for(int x=i; x<i+Volatility_Band; x++)
{
RSI[x-i]=RSIBuf[x];
MA+=RSIBuf[x]/Volatility_Band;
}
UpZone[i]=(MA + (1.6185 * StDev(RSI,Volatility_Band)));
DnZone[i]=(MA - (1.6185 * StDev(RSI,Volatility_Band)));
MdZone[i]=((UpZone[i] + DnZone[i])/2);
}
for(i=limit-1;i>=0;i--)
{
MaBuf[i]=(iMAOnArray(RSIBuf,0,RSI_Price_Line,0,RSI_Price_Type,i));
MbBuf[i]=(iMAOnArray(RSIBuf,0,Trade_Signal_Line,0,Trade_Signal_Type,i));
McBuf[i]=(iMAOnArray(RSIBuf,0,Trade_Signal_Line2,0,Trade_Signal_Type,i));
//----
string Signal="", Signal2="",Signal2A="", Signal3="",Signal4="",Signal5="";
color TDI_col,TDI_col2,TDI_col3,TDI_col4;
if(Show_VISUAL_Alerts==true)
{
static double crossPrice;
int crossDirection;crossDirection =0;
//signals
if((MaBuf[0]>MbBuf[0])&&(MbBuf[0]<MdZone[0])&&(MaBuf[0]< MdZone[0])&&(MaBuf[0]>32)&&(MaBuf[0]<68)){Signal="é";TDI_col=SeaGreen;}
if((MaBuf[0]>MbBuf[0])&&(MbBuf[0]<MdZone[0])&&(MaBuf[0]< MdZone[0])&&(MaBuf[0]>32)&&(MaBuf[0]<68)){Signal2A="Weak Buy";TDI_col2=SeaGreen;}
if((MaBuf[0]>MbBuf[0])&&(MbBuf[0]<MdZone[0])&&(MaBuf[0]< MdZone[0])&&(MaBuf[0]>32)&&(MaBuf[0]<68)){Signal2=" @ "+DoubleToStr(crossPrice,Digits)+"";TDI_col2=SeaGreen;}
if((MaBuf[0]>MbBuf[0])&&(MbBuf[0]<MdZone[0])&&(MaBuf[0]< MdZone[0])&&(MaBuf[0]>32)&&(MaBuf[0]<68)){crossPrice=Bid;crossDirection =2;}
//
if((MaBuf[0]<MbBuf[0])&&(MbBuf[0]> MdZone[0])&&(MaBuf[0]> MdZone[0])&&(MaBuf[0]>32)&&(MaBuf[0]<68)){Signal="ê";TDI_col=Orange;}
if((MaBuf[0]<MbBuf[0])&&(MbBuf[0]> MdZone[0])&&(MaBuf[0]> MdZone[0])&&(MaBuf[0]>32)&&(MaBuf[0]<68)){Signal2A="Weak Sell";TDI_col2=Orange;}
if((MaBuf[0]<MbBuf[0])&&(MbBuf[0]> MdZone[0])&&(MaBuf[0]> MdZone[0])&&(MaBuf[0]>32)&&(MaBuf[0]<68)){Signal2=" @ "+DoubleToStr(crossPrice,Digits)+"";TDI_col2=Orange;}
if((MaBuf[0]<MbBuf[0])&&(MbBuf[0]> MdZone[0])&&(MaBuf[0]> MdZone[0])&&(MaBuf[0]>32)&&(MaBuf[0]<68)){crossPrice=Bid;crossDirection =1;}
//
if((MaBuf[0]>MbBuf[0])&&(MbBuf[0]> MdZone[0])&&(MaBuf[0]>32)&&(MaBuf[0]<68)){Signal="é";TDI_col=Lime;}
if((MaBuf[0]>MbBuf[0])&&(MbBuf[0]> MdZone[0])&&(MaBuf[0]>32)&&(MaBuf[0]<68)){Signal2A="Strong Buy";TDI_col2=Lime;}
if((MaBuf[0]>MbBuf[0])&&(MbBuf[0]> MdZone[0])&&(MaBuf[0]>32)&&(MaBuf[0]<68)){Signal2=" @ "+DoubleToStr(crossPrice,Digits)+"";TDI_col2=Lime;}
if((MaBuf[0]>MbBuf[0])&&(MbBuf[0]> MdZone[0])&&(MaBuf[0]>32)&&(MaBuf[0]<68)){crossPrice=Bid;crossDirection =2;}
//
if((MaBuf[0]>MbBuf[0])&&(MaBuf[0]> MdZone[0])&&(MbBuf[0]< MdZone[0])&&(MaBuf[0]>32)&&(MaBuf[0]<68)){Signal2A="Medium Buy";TDI_col2=Green;}
if((MaBuf[0]>MbBuf[0])&&(MaBuf[0]> MdZone[0])&&(MbBuf[0]< MdZone[0])&&(MaBuf[0]>32)&&(MaBuf[0]<68)){Signal2=" @ "+DoubleToStr(crossPrice,Digits)+"";TDI_col2=Green;}
if((MaBuf[0]>MbBuf[0])&&(MaBuf[0]> MdZone[0])&&(MbBuf[0]< MdZone[0])&&(MaBuf[0]>32)&&(MaBuf[0]<68)){Signal5="é";TDI_col2=Green;}
if((MaBuf[0]>MbBuf[0])&&(MaBuf[0]> MdZone[0])&&(MbBuf[0]< MdZone[0])&&(MaBuf[0]>32)&&(MaBuf[0]<68)){crossPrice=Bid;crossDirection =2;}
//
if((MaBuf[0]<MbBuf[0])&&(MbBuf[0]< MdZone[0])&&(MaBuf[0]>32)&&(MaBuf[0]<68)){Signal="ê";TDI_col=Red;}
if((MaBuf[0]<MbBuf[0])&&(MbBuf[0]< MdZone[0])&&(MaBuf[0]>32)&&(MaBuf[0]<68)){Signal2A="Strong Sell";TDI_col2=Red;}
if((MaBuf[0]<MbBuf[0])&&(MbBuf[0]< MdZone[0])&&(MaBuf[0]>32)&&(MaBuf[0]<68)){Signal2=" @ "+DoubleToStr(crossPrice,Digits)+"";TDI_col2=Red;}
if((MaBuf[0]<MbBuf[0])&&(MbBuf[0]< MdZone[0])&&(MaBuf[0]>32)&&(MaBuf[0]<68)){crossPrice=Bid;crossDirection =1;}
//
if((MaBuf[0]<MbBuf[0])&&(MaBuf[0]< MdZone[0])&&(MbBuf[0]> MdZone[0])&&(MaBuf[0]>32)&&(MaBuf[0]<68)){Signal2A="Medium Sell";TDI_col2=Tomato;}
if((MaBuf[0]<MbBuf[0])&&(MaBuf[0]< MdZone[0])&&(MbBuf[0]> MdZone[0])&&(MaBuf[0]>32)&&(MaBuf[0]<68)){Signal2=" @ "+DoubleToStr(crossPrice,Digits)+"";TDI_col2=Tomato;}
if((MaBuf[0]<MbBuf[0])&&(MaBuf[0]< MdZone[0])&&(MbBuf[0]> MdZone[0])&&(MaBuf[0]>32)&&(MaBuf[0]<68)){Signal5="ê";TDI_col2=Tomato;}
if((MaBuf[0]<MbBuf[0])&&(MaBuf[0]< MdZone[0])&&(MbBuf[0]> MdZone[0])&&(MaBuf[0]>32)&&(MaBuf[0]<68)){crossPrice=Bid;crossDirection =1;}
// reversals
if(MaBuf[0]>=68){Signal="ê";TDI_col=Red;}
if(MaBuf[0]>=68){crossPrice=Bid;crossDirection =2;}
if(MaBuf[0]>=68){Signal2A="Caution !";TDI_col2=Red;}
if(MaBuf[0]>=68){Signal2=" @ "+DoubleToStr(crossPrice,Digits)+"";TDI_col2=Red;}
if(MaBuf[0]<=32){Signal="é";TDI_col=Red;}
if(MaBuf[0]<=32){crossPrice=Bid;crossDirection =1;}
if(MaBuf[0]<=32){Signal2A="Caution !";TDI_col2=Red;}
if(MaBuf[0]<=32){Signal2=" @ "+DoubleToStr(crossPrice,Digits)+"";TDI_col2=Red;}
//trend
if(MbBuf[0]>MdZone[0]){Signal3="é";TDI_col3=Lime;}
if((MbBuf[0]<MdZone[0])&&(MaBuf[0]>MdZone[0])){Signal3="é";TDI_col3=Orange;}
if(MbBuf[0]<MdZone[0]){Signal3="ê";TDI_col3=Red;}
if((MbBuf[0]>MdZone[0])&&(MaBuf[0]<MdZone[0])){Signal3="é";TDI_col3=Green;}
//ranging
if(UpZone[0]-DnZone[i]<20){Signal4="Consolidation";TDI_col4=Silver;}
ObjectDelete("TDI_SIG");
ObjectCreate("TDI_SIG", OBJ_LABEL,WindowFind("Traders Dynamic Index Visual"), 0, 0);
ObjectSetText("TDI_SIG",Signal, 25, "Wingdings",TDI_col );
ObjectSet("TDI_SIG", OBJPROP_CORNER, 1);
ObjectSet("TDI_SIG", OBJPROP_XDISTANCE, 80+SHIFT_Sideway);
ObjectSet("TDI_SIG", OBJPROP_YDISTANCE, 20+SHIFT_Up_Down);
//
ObjectDelete("TDI_SIG1");
ObjectCreate("TDI_SIG1", OBJ_LABEL,WindowFind("Traders Dynamic Index Visual"), 0, 0);
ObjectSetText("TDI_SIG1",Signal2, 15, "Tahoma Narrow",TDI_col2);
ObjectSet("TDI_SIG1", OBJPROP_CORNER, 1);
ObjectSet("TDI_SIG1", OBJPROP_XDISTANCE, 120+SHIFT_Sideway);
ObjectSet("TDI_SIG1", OBJPROP_YDISTANCE, 30+SHIFT_Up_Down);
//
ObjectDelete("TDI_SIG2");
ObjectCreate("TDI_SIG2", OBJ_LABEL,WindowFind("Traders Dynamic Index Visual"), 0, 0);
ObjectSetText("TDI_SIG2",Signal2A, 15, "Tahoma Narrow",TDI_col2);
ObjectSet("TDI_SIG2", OBJPROP_CORNER, 1);
ObjectSet("TDI_SIG2", OBJPROP_XDISTANCE, 120+SHIFT_Sideway);
ObjectSet("TDI_SIG2", OBJPROP_YDISTANCE, 10+SHIFT_Up_Down);
//
ObjectDelete("TDI_SIG3");
ObjectCreate("TDI_SIG3", OBJ_LABEL,WindowFind("Traders Dynamic Index Visual"), 0, 0);
ObjectSetText("TDI_SIG3",Signal5, 25, "Wingdings",TDI_col2 );
ObjectSet("TDI_SIG3", OBJPROP_CORNER, 1);
ObjectSet("TDI_SIG3", OBJPROP_XDISTANCE, 80+SHIFT_Sideway);
ObjectSet("TDI_SIG3", OBJPROP_YDISTANCE, 20+SHIFT_Up_Down);
//
ObjectDelete("TDI_SIG4");
ObjectCreate("TDI_SIG4", OBJ_LABEL,WindowFind("Traders Dynamic Index Visual"), 0, 0);
ObjectSetText("TDI_SIG4",Signal3, 25, "Wingdings",TDI_col3 );
ObjectSet("TDI_SIG4", OBJPROP_CORNER, 1);
ObjectSet("TDI_SIG4", OBJPROP_XDISTANCE, 80+SHIFT_Sideway);
ObjectSet("TDI_SIG4", OBJPROP_YDISTANCE, 55+SHIFT_Up_Down);
//
ObjectDelete("TDI_SIG5");
ObjectCreate("TDI_SIG5", OBJ_LABEL,WindowFind("Traders Dynamic Index Visual"), 0, 0);
ObjectSetText("TDI_SIG5","TDI Trend", 15, "Tahoma Narrow",TDI_col3 );
ObjectSet("TDI_SIG5", OBJPROP_CORNER, 1);
ObjectSet("TDI_SIG5", OBJPROP_XDISTANCE, 120+SHIFT_Sideway);
ObjectSet("TDI_SIG5", OBJPROP_YDISTANCE, 60+SHIFT_Up_Down);
//
ObjectDelete("TDI_SIG6");
ObjectCreate("TDI_SIG6", OBJ_LABEL,WindowFind("Traders Dynamic Index Visual"), 0, 0);
ObjectSetText("TDI_SIG6",Signal4, 15, "Tahoma Narrow",TDI_col4 );
ObjectSet("TDI_SIG6", OBJPROP_CORNER, 1);
ObjectSet("TDI_SIG6", OBJPROP_XDISTANCE, 100+SHIFT_Sideway);
ObjectSet("TDI_SIG6", OBJPROP_YDISTANCE, 100+SHIFT_Up_Down);}
//line numbers
ObjectDelete("TDI_SIG7");
ObjectDelete("TDI_SIG7");
if(ObjectFind("TDI_SIG7")!=0)
{
ObjectCreate("TDI_SIG7", OBJ_TEXT,WindowFind("Traders Dynamic Index Visual"), Time[0],70);
ObjectSetText("TDI_SIG7"," 68 ",7, "Tahoma Narrow",CadetBlue);
}
else
{
ObjectMove("TDI_SIG7", 0, Time[0], 70);
}
ObjectDelete("TDI_SIG8");
ObjectDelete("TDI_SIG8");
if(ObjectFind("TDI_SIG8")!=0)
{
ObjectCreate("TDI_SIG8", OBJ_TEXT,WindowFind("Traders Dynamic Index Visual"), Time[0],52);
ObjectSetText("TDI_SIG8"," 50 ",7, "Tahoma Narrow",CadetBlue);
}
else
{
ObjectMove("TDI_SIG8", 0, Time[0], 52);
}
ObjectDelete("TDI_SIG9");
ObjectDelete("TDI_SIG9");
if(ObjectFind("TDI_SIG9")!=0)
{
ObjectCreate("TDI_SIG9", OBJ_TEXT,WindowFind("Traders Dynamic Index Visual"), Time[0],34);
ObjectSetText("TDI_SIG9"," 32 ",7, "Tahoma Narrow",CadetBlue);
}
else
{
ObjectMove("TDI_SIG9", 0, Time[0], 34);
}
}
//----
return(0);
}
//+------------------------------------------------------------------+
//| |
//+------------------------------------------------------------------+
double StDev(double& Data[], int Per)
{
return(MathSqrt(Variance(Data,Per)));
}
//+------------------------------------------------------------------+
//| |
//+------------------------------------------------------------------+
double Variance(double& Data[], int Per)
{
double sum, ssum;
for(int i=0; i<Per; i++)
{
sum+=Data[i];
ssum+=MathPow(Data[i],2);
}
return((ssum*Per - sum*sum)/(Per*(Per-1)));
}
//+------------------------------------------------------------------+
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