//+------------------------------------------------------------------+
//| Envelopes.mq4 |
//| Copyright © 2005, MetaQuotes Software Corp. |
//| www.forex-tsd.com http://www.metaquotes.net |
//+------------------------------------------------------------------+
#property copyright "Copyright © 2005, MetaQuotes Software Corp."
#property link "http://www.metaquotes.net www.forex-tsd.com"
//---- indicator settings
#property indicator_chart_window
#property indicator_buffers 2
#property indicator_color1 Yellow
#property indicator_color2 Goldenrod
//---- indicator parameters
extern int MA_Period=5;
extern int MA_Shift=0;
extern int MA_Method=2;
extern int Applied_Price=0;
extern double Deviation=0.0;
/*************************************************************************
---------------------------------------
PRICE_CLOSE 0 Close price.
PRICE_OPEN 1 Open price.
PRICE_HIGH 2 High price.
PRICE_LOW 3 Low price.
PRICE_MEDIAN 4 Median price, (high+low)/2.
PRICE_TYPICAL 5 Typical price, (high+low+close)/3.
PRICE_WEIGHTED 6 Weighted close price, (high+low+close+close)/4.
You must use the numeric value of the Applied Price that you want to use
when you set the 'applied_price' value with the indicator inputs.
---------------------------------------
MODE_SMA 0 Simple moving average,
MODE_EMA 1 Exponential moving average,
MODE_SMMA 2 Smoothed moving average,
MODE_LWMA 3 Linear weighted moving average.
You must use the numeric value of the MA Method that you want to use
when you set the 'ma_method' value with the indicator inputs.
**************************************************************************/
//---- indicator buffers
double ExtMapBuffer1[];
double ExtMapBuffer2[];
//----
int ExtCountedBars=0;
//+------------------------------------------------------------------+
//| Custom indicator initialization function |
//+------------------------------------------------------------------+
int init()
{
int draw_begin;
string short_name;
//---- drawing settings
SetIndexStyle(0,DRAW_LINE);
SetIndexStyle(1,DRAW_LINE);
SetIndexShift(0,MA_Shift);
SetIndexShift(1,MA_Shift);
IndicatorDigits(MarketInfo(Symbol(),MODE_DIGITS));
if(MA_Period<2) MA_Period=14;
draw_begin=MA_Period-1;
//---- indicator short name
IndicatorShortName("PAC("+MA_Period+")");
SetIndexLabel(0,"Env("+MA_Period+")Upper");
SetIndexLabel(1,"Env("+MA_Period+")Lower");
SetIndexDrawBegin(0,draw_begin);
SetIndexDrawBegin(1,draw_begin);
//---- indicator buffers mapping
SetIndexBuffer(0,ExtMapBuffer1);
SetIndexBuffer(1,ExtMapBuffer2);
if(Deviation<0) Deviation=0;
if(Deviation>100.0) Deviation=100.0;
//---- initialization done
return(0);
}
//+------------------------------------------------------------------+
//| Custom indicator iteration function |
//+------------------------------------------------------------------+
int start()
{
int limit;
if(Bars<=MA_Period) return(0);
ExtCountedBars=IndicatorCounted();
//---- check for possible errors
if (ExtCountedBars<0) return(-1);
//---- last counted bar will be recounted
if (ExtCountedBars>0) ExtCountedBars--;
limit=Bars-ExtCountedBars;
//---- EnvelopesM counted in the buffers
for(int i=0; i<limit; i++)
{
ExtMapBuffer1[i] = (1+Deviation/100)*iMA(NULL,0,MA_Period,0,MODE_SMMA,PRICE_HIGH,i);
ExtMapBuffer2[i] = (1-Deviation/100)*iMA(NULL,0,MA_Period,0,MODE_SMMA,PRICE_LOW,i);
}
//---- done
return(0);
}
//+------------------------------------------------------------------+
Sample
Analysis
Market Information Used:
Indicator Curves created:
Implements a curve of type DRAW_LINE
Indicators Used:
Moving average indicator
Custom Indicators Used:
Order Management characteristics:
Other Features: