//+------------------------------------------------------------------+
//| ZigzagHistory.mq4 |
//| Copyright © 2005-2007, MetaQuotes Software Corp. |
//+------------------------------------------------------------------+
#property copyright "Copyright © 2007, MetaQuotes Software Corp."
#property indicator_chart_window
#property indicator_buffers 7
#property indicator_color1 Red
#property indicator_color4 Green
#property indicator_color5 Green
#property indicator_color6 DimGray
#property indicator_color7 Gold
//---- indicator parameters
extern int ExtDepth=10;
extern int ExtDeviation=5;
extern int ExtBackstep=3;
//---- indicator buffers
double ZigzagBuffer[];
double LastLegBuffer[];
double HighMapBuffer[];
double LowMapBuffer[];
double Hi[];
double Lo[];
double Mid[];
int level=3; // recounting's depth
bool downloadhistory=false;
//+------------------------------------------------------------------+
//| Custom indicator initialization function |
//+------------------------------------------------------------------+
int init()
{
IndicatorBuffers(7);
//---- drawing settings
//---- indicator buffers mapping
SetIndexBuffer(0,ZigzagBuffer); SetIndexStyle(0,DRAW_SECTION);
SetIndexBuffer(1,HighMapBuffer); SetIndexStyle(1,DRAW_NONE);
SetIndexBuffer(2,LowMapBuffer); SetIndexStyle(2,DRAW_NONE);
SetIndexBuffer(3,Hi); SetIndexStyle(3,DRAW_LINE);
SetIndexBuffer(4,Lo); SetIndexStyle(4,DRAW_LINE);
SetIndexBuffer(5,Mid); SetIndexStyle(5,DRAW_LINE);
SetIndexBuffer(6,LastLegBuffer);SetIndexStyle(6,DRAW_SECTION);
SetIndexEmptyValue(0,0.0);
SetIndexEmptyValue(6,0.0);
//---- indicator short name
IndicatorShortName("ZigZag("+ExtDepth+","+ExtDeviation+","+ExtBackstep+")");
//---- initialization done
return(0);
}
//+------------------------------------------------------------------+
//| |
//+------------------------------------------------------------------+
int start()
{
int i, p,counted_bars = IndicatorCounted();
int limit,counterZ,whatlookfor;
int shift,back,lasthighpos,lastlowpos;
double val,res;
double curlow,curhigh,lasthigh,lastlow;
if (counted_bars==0 && downloadhistory) // history was downloaded
{
ArrayInitialize(ZigzagBuffer,0.0);
ArrayInitialize(HighMapBuffer,0.0);
ArrayInitialize(LowMapBuffer,0.0);
ArrayInitialize(Hi,0.0);
ArrayInitialize(Lo,0.0);
ArrayInitialize(Mid,0.0);
}
if (counted_bars==0)
{
limit=Bars-ExtDepth;
downloadhistory=true;
}
if (counted_bars>0)
{
while (counterZ<level && i<100)
{
res=ZigzagBuffer[i];
if (res!=0) counterZ++;
i++;
}
i--;
limit=i;
if (LowMapBuffer[i]!=0)
{
curlow=LowMapBuffer[i];
whatlookfor=1;
}
else
{
curhigh=HighMapBuffer[i];
whatlookfor=-1;
}
for (i=limit-1;i>=0;i--)
{
ZigzagBuffer[i]=0.0;
LowMapBuffer[i]=0.0;
HighMapBuffer[i]=0.0;
LastLegBuffer[i]=0.0;
}
}
for(shift=limit; shift>=0; shift--)
{
val=Low[iLowest(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=LowMapBuffer[shift+back];
if((res!=0)&&(res>val)) LowMapBuffer[shift+back]=0.0;
}
}
}
if (Low[shift]==val) { LowMapBuffer[shift]=val; Lo[shift]=val; }
else { LowMapBuffer[shift]=0.0; Lo[shift] = Lo[shift+1];}
//--- high
val=High[iHighest(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=HighMapBuffer[shift+back];
if((res!=0)&&(res<val)) HighMapBuffer[shift+back]=0.0;
}
}
}
if (High[shift]==val) { HighMapBuffer[shift]=val; Hi[shift]=val; }
else { HighMapBuffer[shift]=0.0; Hi[shift]=Hi[shift+1]; }
}
for (shift=limit;shift>=0;shift--) Mid[shift] = (Hi[shift]+Lo[shift])/2;
// final cutting
if (whatlookfor==0)
{
lastlow=0;
lasthigh=0;
}
else
{
lastlow=curlow;
lasthigh=curhigh;
}
for (shift=limit;shift>=0;shift--)
{
res=0.0;
switch(whatlookfor)
{
case 0: // look for peak or lawn
if (lastlow==0 && lasthigh==0)
{
if (HighMapBuffer[shift]!=0)
{
lasthigh=High[shift];
lasthighpos=shift;
whatlookfor=-1;
ZigzagBuffer[shift]=lasthigh;
res=1;
}
if (LowMapBuffer[shift]!=0)
{
lastlow=Low[shift];
lastlowpos=shift;
whatlookfor=1;
ZigzagBuffer[shift]=lastlow;
res=1;
}
}
break;
case 1: // look for peak
if (LowMapBuffer[shift]!=0.0 && LowMapBuffer[shift]<lastlow && HighMapBuffer[shift]==0.0)
{
ZigzagBuffer[lastlowpos]=0.0;
lastlowpos=shift;
lastlow=LowMapBuffer[shift];
ZigzagBuffer[shift]=lastlow;
res=1;
}
if (HighMapBuffer[shift]!=0.0 && LowMapBuffer[shift]==0.0)
{
lasthigh=HighMapBuffer[shift];
lasthighpos=shift;
ZigzagBuffer[shift]=lasthigh;
whatlookfor=-1;
res=1;
}
break;
case -1: // look for lawn
if (HighMapBuffer[shift]!=0.0 && HighMapBuffer[shift]>lasthigh && LowMapBuffer[shift]==0.0)
{
ZigzagBuffer[lasthighpos]=0.0;
lasthighpos=shift;
lasthigh=HighMapBuffer[shift];
ZigzagBuffer[shift]=lasthigh;
}
if (LowMapBuffer[shift]!=0.0 && HighMapBuffer[shift]==0.0)
{
lastlow=LowMapBuffer[shift];
lastlowpos=shift;
ZigzagBuffer[shift]=lastlow;
whatlookfor=1;
}
break;
default: return;
}
}
for (p=0,i=0;i<Bars && p<2;i++)
{
if (ZigzagBuffer[i] != 0)
{
LastLegBuffer[i] = ZigzagBuffer[i]; p++;
}
}
return(0);
}
//+------------------------------------------------------------------+
Sample
Analysis
Market Information Used:
Series array that contains the lowest prices of each bar
Series array that contains the highest prices of each bar
Indicator Curves created:
Implements a curve of type DRAW_SECTION
Implements a curve of type DRAW_NONE
Implements a curve of type DRAW_LINE
Indicators Used:
Custom Indicators Used:
Order Management characteristics:
Other Features: