//+------------------------------------------------------------------+
//| Keltner Channel.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"
#property indicator_chart_window
#property indicator_buffers 3
#property indicator_color1 Red
#property indicator_color2 Blue
#property indicator_color3 Red
//---- input parameters
extern int period = 10;
//----
double upper[], middle[], lower[];
//+------------------------------------------------------------------+
//| Custom indicator initialization function |
//+------------------------------------------------------------------+
int init()
{
SetIndexBuffer(0, upper);
SetIndexStyle(0, DRAW_LINE);
SetIndexShift(0, 0);
SetIndexDrawBegin(0, 0);
//----
SetIndexBuffer(1, middle);
SetIndexStyle(1, DRAW_LINE, STYLE_DASHDOT);
SetIndexShift(1, 0);
SetIndexDrawBegin(1, 0);
//----
SetIndexBuffer(2, lower);
SetIndexStyle(2, DRAW_LINE);
SetIndexShift(2, 0);
SetIndexDrawBegin(2, 0);
//---- name for DataWindow label
SetIndexLabel(0, "KChanUp(" + period + ")");
SetIndexLabel(1, "KChanMid(" + period + ")");
SetIndexLabel(2, "KChanLow(" + period + ")");
//----
return(0);
}
//+------------------------------------------------------------------+
//| Custor indicator deinitialization function |
//+------------------------------------------------------------------+
int deinit()
{
//----
return(0);
}
//+------------------------------------------------------------------+
//| Custom indicator iteration function |
//+------------------------------------------------------------------+
int start()
{
int limit;
double avg;
int counted_bars = IndicatorCounted();
if(counted_bars < 0)
return(-1);
if(counted_bars > 0)
counted_bars--;
limit = Bars - counted_bars;
//----
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: