Keltner Channel : Could some please program this for me !

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Just found your wonderful software.

I use Keltner Channel extensively. And I was surprised that you did not already have it.

Formula from : http://www.tssupport.com/support/base/?action=article&id=1263


INPUTS: PRICE(CLOSE),MALEN(10),CONST(.8);
VARS: CENTLINE(0), AVGRANGE(0), UPPER(0), LOWER(0);

CENTLINE=AVERAGE(PRICE,MALEN);
AVGRANGE=AVERAGE(TRUERANGE,MALEN);
UPPER=CENTLINE+(AVGRANGE*CONST);
LOWER=CENTLINE-(AVGRANGE*CONST);

PLOT1(CENTLINE,"CENTLINE");
PLOT2(UPPER,"UPPER");
PLOT3(LOWER,"LOWER");

********TRUERANGE*****
True Range = TrueHigh - TrueLow;

*****TrueHigh*****
If close previous > high current then use close, otherwise use current high.
Switch for true low...

Are you able to do this for me as a Customer idicator,

Thanks
 
//+------------------------------------------------------------------+
//| Keltner Channels.mq4 |
//| Coded by Gilani |
//| Copyright © 2005, MetaQuotes Software Corp. |
//| https://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 White
#property indicator_color2 White
#property indicator_color3 White


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);
}
 
//+------------------------------------------------------------------+
//| Keltner Channels.mq4 |
//| Coded by Gilani |
//| Copyright © 2005, MetaQuotes Software Corp. |
//| https://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 White
#property indicator_color2 White
#property indicator_color3 White



extern int period_ma = 20;
extern int period_atr = 20;
extern double multiplier = 2.0;

double upper[], middle[], lower[];

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;

for(int x=0; x<limit; x++) {
middle[x] = iMA(NULL, 0, period_ma, 0, MODE_EMA, PRICE_CLOSE, x);
upper[x] = middle[x] + (multiplier * iATR(NULL, 0, period_atr, x));
lower[x] = middle[x] - (multiplier * iATR(NULL, 0, period_atr, x));
}
return(0);
}
//+------------------------------------------------------------------+
 
Why is there two postings, does the second one work ?

Thanks for the effort
 
Ok first thanks for doing it...just a couple of errors

The moving average used is Exponential should be SIMPLE...oops thats the first posting...I try that.
 
The iATR function is not correct for the keltner channel

I used AVGRANGE, which is incorrect. Should be Average true range..this code is from Ts2000i Omega Tradestation.

Inputs :Price, Length, Factor;


KeltnerChannel = Average(Price, Length) + AvgTrueRange(Length) * Factor;
{Average is simple moving average}
************
AvgTrueRange = Average(TrueRange, Length);
{Average is simple moving average}
************
TrueRange = TrueHigh - trueLow;
************
TrueHigh
If close(Previous) > High(current) then TrueHIgh = Close(previous) else Truehigh = high;

TrueLow
If close(previous) < Low(current) then TrueLow = Low(Previous) else TrueLow = low;

Can you please fix your second posting with the above amendments. thanks.
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