//+------------------------------------------------------------------+
//| Price Channel.mq4 |
//| Copyright © 2004, Poul_Trade_Forum |
//| Aborigen |
//| http://forex.kbpauk.ru/ |
//+------------------------------------------------------------------+
#property link "http://forex.kbpauk.ru/"
#property indicator_chart_window
#property indicator_buffers 3
#property indicator_color1 DodgerBlue
#property indicator_color2 DodgerBlue
#property indicator_color3 DodgerBlue
//---- input parameters
extern int ChannelPeriod=14;
extern int Shift=0;
//---- buffers
double UpBuffer[];
double DnBuffer[];
double MdBuffer[];
double Up[],Dn[],Md[];
ArraySetAsSeries(Up,true);
ArraySetAsSeries(Dn,true);
ArraySetAsSeries(Md,true);
//+------------------------------------------------------------------+
//| Custom indicator initialization function |
//+------------------------------------------------------------------+
int init()
{
string short_name;
//---- indicator line
SetIndexStyle(0,DRAW_LINE);
SetIndexStyle(1,DRAW_LINE);
SetIndexStyle(2,DRAW_LINE,2);
SetIndexBuffer(0,UpBuffer);
SetIndexBuffer(1,DnBuffer);
SetIndexBuffer(2,MdBuffer);
//---- name for DataWindow and indicator subwindow label
short_name="Price Channel("+ChannelPeriod+")";
IndicatorShortName(short_name);
SetIndexLabel(0,"Up Channel");
SetIndexLabel(1,"Down Channel");
SetIndexLabel(2,"Middle Channel");
//----
SetIndexDrawBegin(0,ChannelPeriod+Shift);
SetIndexDrawBegin(1,ChannelPeriod+Shift);
SetIndexDrawBegin(2,ChannelPeriod+Shift);
SetIndexEmptyValue(0,0);
SetIndexEmptyValue(1,0);
SetIndexEmptyValue(2,0);
//----
return(0);
}
//+------------------------------------------------------------------+
//| Price Channel |
//+------------------------------------------------------------------+
int start()
{
int i,counted_bars=IndicatorCounted();
int k;
double high,low,price;
//----
if(Bars<=ChannelPeriod) return(0);
//---- initial zero
if(counted_bars<1)
for(i=1;i<=ChannelPeriod;i++) UpBuffer[Bars-i]=0.0;
ArrayResize(Up, Bars);
ArrayResize(Dn, Bars);
ArrayResize(Md, Bars);
//----
i=Bars-ChannelPeriod-1;
if(counted_bars>=ChannelPeriod) i=Bars-counted_bars;
while(i>=0)
{
high=High[i]; low=Low[i]; k=i-1+ChannelPeriod;
while(k>=i)
{
price=High[k];
if(high<price) high=price;
price=Low[k];
if(low>price) low=price;
k--;
}
Up[i]=high;
Dn[i]=low;
Md[i]=(high+low)/2;
UpBuffer[i]=Up[i+Shift];
DnBuffer[i]=Dn[i+Shift];
MdBuffer[i]=Md[i+Shift];
i--;
}
return(0);
}
//+------------------------------------------------------------------+
Sample
Analysis
Market Information Used:
Series array that contains the highest prices of each bar
Series array that contains the lowest prices of each bar
Indicator Curves created:
Implements a curve of type DRAW_LINE
Indicators Used:
Custom Indicators Used:
Order Management characteristics:
Other Features: