This script is designed to act as a multi-layered visual analysis tool for financial charts, specifically identifying significant price structural points. It identifies "ZigZag" patterns—which are the high and low points of market movement—across three different time scales or sensitivities simultaneously.
Core Logic Overview
The primary purpose of this script is to filter out minor market noise to highlight major trends and turning points. Instead of showing every small fluctuation in price, it uses a "filtering logic" to ensure that only significant price movements are marked on the chart.
1. Multi-Level Analysis (The "3-Level" Approach)
The script operates on three distinct levels of sensitivity. By using different periods (settings), it allows a user to see:
- Short-term movements: Quick reactions in the current price action.
- Medium-term trends: The general direction of the market over a moderate period.
- Long-term structure: The overarching "skeleton" of the market trend.
Because it calculates these three levels at once, traders can see where smaller trends align with larger historical movements.
2. The Filtering Mechanism (ZigZag Logic)
The logic follows a specific set of rules to determine what qualifies as a "peak" or a "valley":
- Distance Requirement: A new point is only recognized if the price moves by a certain amount (the "Deviation"). If the price moves only a tiny bit, the script ignores it.
- Backstep Verification: The script looks back at previous candles to ensure that a newly identified high or low isn't superseded by a more extreme price point in the immediate past. This prevents the chart from looking cluttered with redundant marks.
- Conflict Resolution: If two points are identified very close together, the script performs a "final cutting" process. It compares them and removes the weaker one, ensuring that only the most prominent peak or valley remains visible.
3. Visual Representation
The script translates these mathematical calculations into visual icons (arrows) on the chart.
- Upward Movements: Marked with specific symbols to indicate a confirmed "low" point where the price began to move up.
- Downward Movements: Marked with different symbols to indicate a confirmed "high" point where the price began to fall.
- Color Coding: The script uses distinct colors for each of the three levels, making it easy to differentiate between a minor short-term fluctuation and a major long-term trend shift at a single glance.
Summary for the User
In plain terms, this script acts as an automated "trend cleaner." It scans the price history, ignores the "jitter" of the market, and draws clear markers on the peaks and valleys of the price action. By providing three different levels of these markers, it helps you see the "big picture" while still keeping an eye on the immediate structure of the market.
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3_Level_ZZ_Semafor
//+------------------------------------------------------------------+
//| 3_Level_ZZ_Semafor.mq4 |
//+------------------------------------------------------------------+
#property copyright "asystem2000"
#property link "asystem2000@yandex.ru"
#property indicator_chart_window
#property indicator_buffers 6
#property indicator_color1 Chocolate
#property indicator_color2 Chocolate
#property indicator_color3 MediumVioletRed
#property indicator_color4 MediumVioletRed
#property indicator_color5 Yellow
#property indicator_color6 Yellow
//---- input parameters
extern double Period1=5;
extern double Period2=13;
extern double Period3=34;
extern string Dev_Step_1="1,3";
extern string Dev_Step_2="8,5";
extern string Dev_Step_3="13,8";
extern int Symbol_1_Kod=140;
extern int Symbol_2_Kod=141;
extern int Symbol_3_Kod=142;
//---- buffers
double FP_BuferUp[];
double FP_BuferDn[];
double NP_BuferUp[];
double NP_BuferDn[];
double HP_BuferUp[];
double HP_BuferDn[];
int F_Period;
int N_Period;
int H_Period;
int Dev1;
int Stp1;
int Dev2;
int Stp2;
int Dev3;
int Stp3;
//+------------------------------------------------------------------+
//| Custom indicator initialization function |
//+------------------------------------------------------------------+
int init()
{
// --------- Êîððåêòèðóåì ïåðèîäû äëÿ ïîñòðîåíèÿ ÇèãÇàãîâ
if (Period1>0) F_Period=MathCeil(Period1*Period()); else F_Period=0;
if (Period2>0) N_Period=MathCeil(Period2*Period()); else N_Period=0;
if (Period3>0) H_Period=MathCeil(Period3*Period()); else H_Period=0;
//---- Îáðàáàòûâàåì 1 áóôåð
if (Period1>0)
{
SetIndexStyle(0,DRAW_ARROW,0,1);
SetIndexArrow(0,Symbol_1_Kod);
SetIndexBuffer(0,FP_BuferUp);
SetIndexEmptyValue(0,0.0);
SetIndexStyle(1,DRAW_ARROW,0,1);
SetIndexArrow(1,Symbol_1_Kod);
SetIndexBuffer(1,FP_BuferDn);
SetIndexEmptyValue(1,0.0);
}
//---- Îáðàáàòûâàåì 2 áóôåð
if (Period2>0)
{
SetIndexStyle(2,DRAW_ARROW,0,1);
SetIndexArrow(2,Symbol_2_Kod);
SetIndexBuffer(2,NP_BuferUp);
SetIndexEmptyValue(2,0.0);
SetIndexStyle(3,DRAW_ARROW,0,1);
SetIndexArrow(3,Symbol_2_Kod);
SetIndexBuffer(3,NP_BuferDn);
SetIndexEmptyValue(3,0.0);
}
//---- Îáðàáàòûâàåì 3 áóôåð
if (Period3>0)
{
SetIndexStyle(4,DRAW_ARROW,0,2);
SetIndexArrow(4,Symbol_3_Kod);
SetIndexBuffer(4,HP_BuferUp);
SetIndexEmptyValue(4,0.0);
SetIndexStyle(5,DRAW_ARROW,0,2);
SetIndexArrow(5,Symbol_3_Kod);
SetIndexBuffer(5,HP_BuferDn);
SetIndexEmptyValue(5,0.0);
}
// Îáðàáàòûâàåì çíà÷åíèÿ äåâèàöèé è øàãîâ
int CDev=0;
int CSt=0;
int Mass[];
int C=0;
if (IntFromStr(Dev_Step_1,C, Mass)==1)
{
Stp1=Mass[1];
Dev1=Mass[0];
}
if (IntFromStr(Dev_Step_2,C, Mass)==1)
{
Stp2=Mass[1];
Dev2=Mass[0];
}
if (IntFromStr(Dev_Step_3,C, Mass)==1)
{
Stp3=Mass[1];
Dev3=Mass[0];
}
return(0);
}
//+------------------------------------------------------------------+
//| Custor indicator deinitialization function |
//+------------------------------------------------------------------+
int deinit()
{
//----
//----
return(0);
}
//+------------------------------------------------------------------+
//| Custom indicator iteration function |
//+------------------------------------------------------------------+
int start()
{
if (Period1>0) CountZZ(FP_BuferUp,FP_BuferDn,Period1,Dev1,Stp1);
if (Period2>0) CountZZ(NP_BuferUp,NP_BuferDn,Period2,Dev2,Stp2);
if (Period3>0) CountZZ(HP_BuferUp,HP_BuferDn,Period3,Dev3,Stp3);
return(0);
}
//+------------------------------------------------------------------+
// äîïîëíèòåëüíûå ôóíêöèè
//int Take
//+------------------------------------------------------------------+
//| Ôóíêö ôîðìèðîâàíèÿ ÇèãÇàãà |
//+------------------------------------------------------------------+
int CountZZ( double& ExtMapBuffer[], double& ExtMapBuffer2[], int ExtDepth, int ExtDeviation, int ExtBackstep )
{
int shift, back,lasthighpos,lastlowpos;
double val,res;
double curlow,curhigh,lasthigh,lastlow;
for(shift=Bars-ExtDepth; shift>=0; shift--)
{
val=Low[Lowest(NULL,0,MODE_LOW,ExtDepth,shift)];
if(val==lastlow) val=0.0;
else
{
lastlow=val;
if((Low[shift]-val)>(ExtDeviation*Point)) val=0.0;
else
{
for(back=1; back<=ExtBackstep; back++)
{
res=ExtMapBuffer[shift+back];
if((res!=0)&&(res>val)) ExtMapBuffer[shift+back]=0.0;
}
}
}
ExtMapBuffer[shift]=val;
//--- high
val=High[Highest(NULL,0,MODE_HIGH,ExtDepth,shift)];
if(val==lasthigh) val=0.0;
else
{
lasthigh=val;
if((val-High[shift])>(ExtDeviation*Point)) val=0.0;
else
{
for(back=1; back<=ExtBackstep; back++)
{
res=ExtMapBuffer2[shift+back];
if((res!=0)&&(res<val)) ExtMapBuffer2[shift+back]=0.0;
}
}
}
ExtMapBuffer2[shift]=val;
}
// final cutting
lasthigh=-1; lasthighpos=-1;
lastlow=-1; lastlowpos=-1;
for(shift=Bars-ExtDepth; shift>=0; shift--)
{
curlow=ExtMapBuffer[shift];
curhigh=ExtMapBuffer2[shift];
if((curlow==0)&&(curhigh==0)) continue;
//---
if(curhigh!=0)
{
if(lasthigh>0)
{
if(lasthigh<curhigh) ExtMapBuffer2[lasthighpos]=0;
else ExtMapBuffer2[shift]=0;
}
//---
if(lasthigh<curhigh || lasthigh<0)
{
lasthigh=curhigh;
lasthighpos=shift;
}
lastlow=-1;
}
//----
if(curlow!=0)
{
if(lastlow>0)
{
if(lastlow>curlow) ExtMapBuffer[lastlowpos]=0;
else ExtMapBuffer[shift]=0;
}
//---
if((curlow<lastlow)||(lastlow<0))
{
lastlow=curlow;
lastlowpos=shift;
}
lasthigh=-1;
}
}
for(shift=Bars-1; shift>=0; shift--)
{
if(shift>=Bars-ExtDepth) ExtMapBuffer[shift]=0.0;
else
{
res=ExtMapBuffer2[shift];
if(res!=0.0) ExtMapBuffer2[shift]=res;
}
}
}
int Str2Massive(string VStr, int& M_Count, int& VMass[])
{
int val=StrToInteger( VStr);
if (val>0)
{
M_Count++;
int mc=ArrayResize(VMass,M_Count);
if (mc==0)return(-1);
VMass[M_Count-1]=val;
return(1);
}
else return(0);
}
int IntFromStr(string ValStr,int& M_Count, int& VMass[])
{
if (StringLen(ValStr)==0) return(-1);
string SS=ValStr;
int NP=0;
string CS;
M_Count=0;
ArrayResize(VMass,M_Count);
while (StringLen(SS)>0)
{
NP=StringFind(SS,",");
if (NP>0)
{
CS=StringSubstr(SS,0,NP);
SS=StringSubstr(SS,NP+1,StringLen(SS));
}
else
{
if (StringLen(SS)>0)
{
CS=SS;
SS="";
}
}
if (Str2Massive(CS,M_Count,VMass)==0)
{
return(-2);
}
}
return(1);
}
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