//+------------------------------------------------------------------+
//| Envelopes.mq4 |
//| Copyright © 2005, MetaQuotes Software Corp. |
//| http://www.metaquotes.net |
//+------------------------------------------------------------------+
#property copyright "Copyright © 2005, MetaQuotes Software Corp."
#property link "http://www.metaquotes.net"
//---- indicator settings
#property indicator_chart_window
#property indicator_buffers 2
#property indicator_color1 Blue
#property indicator_color2 Red
//---- indicator parameters
extern int MA_Period=14;
extern int MA_Shift=0;
extern int MA_Method=0;
extern int Applied_Price=0;
extern double Deviation=0.1;
//---- 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("Env("+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<0.1) Deviation=0.1;
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,MA_Method,Applied_Price,i);
ExtMapBuffer2[i] = (1-Deviation/100)*iMA(NULL,0,MA_Period,0,MA_Method,Applied_Price,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: