//+------------------------------------------------------------------+
//| Keltner Channels.mq4 |
//| Coded by Gilani |
//| Copyright © 2005, MetaQuotes Software Corp. |
//| http://www.metaquotes.net |
//+------------------------------------------------------------------+
#property copyright "Copyright © 2005, MetaQuotes Software Corp."
#property link "http://www.metaquotes.net"
//+------------------------------------------------------------------+
//| Custom indicator initialization function |
//+------------------------------------------------------------------+
#property indicator_chart_window
#property indicator_buffers 3
#property indicator_color1 Red
#property indicator_color2 Green
#property indicator_color3 Black
//----
double upper[], middle[], lower[];
extern int period=10;
//----
//+------------------------------------------------------------------+
//| |
//+------------------------------------------------------------------+
int init()
{
SetIndexStyle(0,DRAW_LINE);
SetIndexShift(0,0);
SetIndexDrawBegin(0,0);
SetIndexBuffer(0,upper);
SetIndexStyle(1,DRAW_LINE);
SetIndexShift(1,0);
SetIndexDrawBegin(1,0);
SetIndexBuffer(1,middle);
SetIndexStyle(2,DRAW_LINE);
SetIndexShift(2,0);
SetIndexDrawBegin(2,0);
SetIndexBuffer(2,lower);
//---- indicators
//----
return(0);
}
//+------------------------------------------------------------------+
//| Custor indicator deinitialization function |
//+------------------------------------------------------------------+
int deinit()
{
//---- TODO: add your code here
//----
return(0);
}
//+------------------------------------------------------------------+
//| Custom indicator iteration function |
//+------------------------------------------------------------------+
int start()
{
int limit;
int counted_bars=IndicatorCounted();
if(counted_bars<0) return(-1);
if(counted_bars>0) counted_bars--;
limit=Bars-counted_bars;
//----
double avg;
for(int x=0; x<limit; x++)
{
middle[x]=iMA(NULL, 0, period, 0, MODE_SMA, PRICE_TYPICAL, x);
avg =findAvg(period, x);
upper[x]=middle[x] + avg;
lower[x]=middle[x] - avg;
}
return(0);
}
//+------------------------------------------------------------------+
double findAvg(int period, int shift)
{
double sum=0;
for(int x=shift;x<(shift+period);x++)
{
sum+=High[x]-Low[x];
}
sum=sum/period;
return(sum);
}
//+------------------------------------------------------------------+
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:
Moving average indicator
Custom Indicators Used:
Order Management characteristics:
Other Features: