FATLs
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This script functions as a technical analysis tool designed to identify potential trend reversals on a trading chart. Rather than relying on standard moving averages, it uses a sophisticated mathematical formula to analyze price action and provide visual signals for traders.
How the Logic Works
1. Data Processing & Weighted Analysis The core of this tool is a complex calculation that looks at a specific window of historical price data (the closing prices of 38 preceding bars). Every single price point in this window is assigned a unique "weight" or multiplier. This means the indicator doesn't treat all past data equally; instead, it prioritizes certain historical periods more heavily than others to calculate a specific value.
2. Trend Detection The script performs this calculation twice in succession to determine the "velocity" of the price movement:
- It calculates a value for the current state.
- It calculates a value for the previous state.
- By subtracting these two values, the script determines if the market momentum is currently shifting upward (positive result) or downward (negative result).
3. Signal Generation (The Visual Output) The tool is specifically designed to alert the user only at the exact moment a trend changes—not while a trend is ongoing.
- Bullish Signals: When the logic detects a shift from a downward trend to an upward trend, it places a visual marker (an arrow) just below the current price candle.
- Bearish Signals: When the logic detects a shift from an upward trend to a downward trend, it places a visual marker just above the current price candle.
Summary for the Trader
This indicator acts as a "momentum shifter." Instead of cluttering your chart with constant lines or signals, it remains silent during steady trends and only activates when the mathematical weight of recent price action suggests that the market is flipping its direction. It provides a clear visual cue to help identify potential entry points where the trend has officially broken in a new direction.
//+------------------------------------------------------------------+
//| FATLs.mq4
//| Ramdass - Conversion only
//+------------------------------------------------------------------+
#property indicator_chart_window
#property indicator_buffers 2
#property indicator_color1 Blue
#property indicator_color2 Red
extern int CountBars=300;
//---- buffers
double UPBuffer[];
double DownBuffer[];
//+------------------------------------------------------------------+
//| Custom indicator initialization function |
//+------------------------------------------------------------------+
int init()
{
string short_name;
//---- indicator line
IndicatorBuffers(2);
SetIndexStyle(0,DRAW_ARROW);
SetIndexArrow(0,241);
SetIndexBuffer(0,UPBuffer);
SetIndexStyle(1,DRAW_ARROW);
SetIndexArrow(1,242);
SetIndexBuffer(1,DownBuffer);
//----
return(0);
}
//+------------------------------------------------------------------+
//| FATLs |
//+------------------------------------------------------------------+
int start()
{
SetIndexDrawBegin(0,Bars-CountBars+38);
SetIndexDrawBegin(1,Bars-CountBars+38);
int i,counted_bars=IndicatorCounted();
double val1, val2, i1;
bool trend,old;
//----
if(Bars<=38) return(0);
//---- initial zero
if(counted_bars<38)
{
for(i=1;i<=0;i++) UPBuffer[CountBars-i]=0.0;
for(i=1;i<=0;i++) DownBuffer[CountBars-i]=0.0;
}
//----
i=CountBars-38-1;
// if(counted_bars>=38) i=Bars-counted_bars-1;
while(i>=0)
{
val1=
0.4360409450*Close[i+0]
+0.3658689069*Close[i+1]
+0.2460452079*Close[i+2]
+0.1104506886*Close[i+3]
-0.0054034585*Close[i+4]
-0.0760367731*Close[i+5]
-0.0933058722*Close[i+6]
-0.0670110374*Close[i+7]
-0.0190795053*Close[i+8]
+0.0259609206*Close[i+9]
+0.0502044896*Close[i+10]
+0.0477818607*Close[i+11]
+0.0249252327*Close[i+12]
-0.0047706151*Close[i+13]
-0.0272432537*Close[i+14]
-0.0338917071*Close[i+15]
-0.0244141482*Close[i+16]
-0.0055774838*Close[i+17]
+0.0128149838*Close[i+18]
+0.0226522218*Close[i+19]
+0.0208778257*Close[i+20]
+0.0100299086*Close[i+21]
-0.0036771622*Close[i+22]
-0.0136744850*Close[i+23]
-0.0160483392*Close[i+24]
-0.0108597376*Close[i+25]
-0.0016060704*Close[i+26]
+0.0069480557*Close[i+27]
+0.0110573605*Close[i+28]
+0.0095711419*Close[i+29]
+0.0040444064*Close[i+30]
-0.0023824623*Close[i+31]
-0.0067093714*Close[i+32]
-0.0072003400*Close[i+33]
-0.0047717710*Close[i+34]
+0.0005541115*Close[i+35]
+0.0007860160*Close[i+36]
+0.0130129076*Close[i+37]
+0.0040364019*Close[i+38];
val2=
0.4360409450*Close[i+0+1]
+0.3658689069*Close[i+1+1]
+0.2460452079*Close[i+2+1]
+0.1104506886*Close[i+3+1]
-0.0054034585*Close[i+4+1]
-0.0760367731*Close[i+5+1]
-0.0933058722*Close[i+6+1]
-0.0670110374*Close[i+7+1]
-0.0190795053*Close[i+8+1]
+0.0259609206*Close[i+9+1]
+0.0502044896*Close[i+10+1]
+0.0477818607*Close[i+11+1]
+0.0249252327*Close[i+12+1]
-0.0047706151*Close[i+13+1]
-0.0272432537*Close[i+14+1]
-0.0338917071*Close[i+15+1]
-0.0244141482*Close[i+16+1]
-0.0055774838*Close[i+17+1]
+0.0128149838*Close[i+18+1]
+0.0226522218*Close[i+19+1]
+0.0208778257*Close[i+20+1]
+0.0100299086*Close[i+21+1]
-0.0036771622*Close[i+22+1]
-0.0136744850*Close[i+23+1]
-0.0160483392*Close[i+24+1]
-0.0108597376*Close[i+25+1]
-0.0016060704*Close[i+26+1]
+0.0069480557*Close[i+27+1]
+0.0110573605*Close[i+28+1]
+0.0095711419*Close[i+29+1]
+0.0040444064*Close[i+30+1]
-0.0023824623*Close[i+31+1]
-0.0067093714*Close[i+32+1]
-0.0072003400*Close[i+33+1]
-0.0047717710*Close[i+34+1]
+0.0005541115*Close[i+35+1]
+0.0007860160*Close[i+36+1]
+0.0130129076*Close[i+37+1]
+0.0040364019*Close[i+38+1];
i1=val1-val2;
UPBuffer[i]=0.0; DownBuffer[i]=0.0;
if (i1>0) trend=true;
if (i1<0) trend=false;
if ((! trend==old) && trend==true) UPBuffer[i]=Low[i]-5*Point;
if ((! trend==old) && trend==false) DownBuffer[i]=High[i]+5*Point;
old=trend;
i--;
}
return(0);
}
//+------------------------------------------------------------------+
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