MOVING AVERAGE

MOVING AVERAGE: showing the price value over a specific period of time. Buy or sell signal occurs if there is a "crossover".  

//+------------------------------------------------------------------+ //| Custom Moving Average.mq4 | //| Copyright © 2004, MetaQuotes Software Corp. | //| http://www.metaquotes.net/ | //+------------------------------------------------------------------+ #property copyright "Copyright © 2004, MetaQuotes Software Corp." #property link "http://www.metaquotes.net/" #property indicator_chart_window #property indicator_buffers 1 #property indicator_color1 Red //---- indicator parameters extern int MA_Period=13; extern int MA_Shift=0; extern int MA_Method=0; //---- indicator buffers double ExtMapBuffer[]; //---- int ExtCountedBars=0; //+------------------------------------------------------------------+ //| Custom indicator initialization function | //+------------------------------------------------------------------+ int init() { int draw_begin; string short_name; //---- drawing settings SetIndexStyle(0,DRAW_LINE); SetIndexShift(0,MA_Shift); IndicatorDigits(MarketInfo(Symbol(),MODE_DIGITS)); if(MA_Period<2 data-blogger-escaped-1="" data-blogger-escaped-2="" data-blogger-escaped-3="" data-blogger-escaped-:="" data-blogger-escaped-ars="" data-blogger-escaped-bar="" data-blogger-escaped-be="" data-blogger-escaped-break="" data-blogger-escaped-buffers="" data-blogger-escaped-case="" data-blogger-escaped-check="" data-blogger-escaped-counted="" data-blogger-escaped-default="" data-blogger-escaped-done="" data-blogger-escaped-draw_begin="" data-blogger-escaped-eriod="" data-blogger-escaped-errors="" data-blogger-escaped-ethod="" data-blogger-escaped-extcountedbars="IndicatorCounted();" data-blogger-escaped-for="" data-blogger-escaped-if="" data-blogger-escaped-indicator="" data-blogger-escaped-indicatorshortname="" data-blogger-escaped-initialization="" data-blogger-escaped-int="" data-blogger-escaped-last="" data-blogger-escaped-ma_method="0;" data-blogger-escaped-ma_period="13;" data-blogger-escaped-mapping="" data-blogger-escaped-name="" data-blogger-escaped-possible="" data-blogger-escaped-recounted="" data-blogger-escaped-return="" data-blogger-escaped-setindexbuffer="" data-blogger-escaped-setindexdrawbegin="" data-blogger-escaped-short="" data-blogger-escaped-short_name="" data-blogger-escaped-start="" data-blogger-escaped-switch="" data-blogger-escaped-will="" data-blogger-escaped-xtcountedbars="" data-blogger-escaped-xtmapbuffer="">0) ExtCountedBars--; //---- switch(MA_Method) { case 0 : sma(); break; case 1 : ema(); break; case 2 : smma(); break; case 3 : lwma(); } //---- done return(0); } //+------------------------------------------------------------------+ //| Simple Moving Average | //+------------------------------------------------------------------+ void sma() { double sum=0; int i,pos=Bars-ExtCountedBars-1; //---- initial accumulation if(pos=0) { sum+=Close[pos]; ExtMapBuffer[pos]=sum/MA_Period; sum-=Close[pos+MA_Period-1]; pos--; } //---- zero initial bars if(ExtCountedBars<1 data-blogger-escaped-ars-i="" data-blogger-escaped-average="" data-blogger-escaped-double="" data-blogger-escaped-ema="" data-blogger-escaped-exponential="" data-blogger-escaped-extmapbuffer="" data-blogger-escaped-for="" data-blogger-escaped-i="1;i<MA_Period;i++)" data-blogger-escaped-if="" data-blogger-escaped-int="" data-blogger-escaped-moving="" data-blogger-escaped-pos="Bars-2;" data-blogger-escaped-pr="2.0/(MA_Period+1);" data-blogger-escaped-void="" data-blogger-escaped-xtcountedbars="">2) pos=Bars-ExtCountedBars-1; //---- main calculation loop while(pos>=0) { if(pos==Bars-2) ExtMapBuffer[pos+1]=Close[pos+1]; ExtMapBuffer[pos]=Close[pos]*pr+ExtMapBuffer[pos+1]*(1-pr); pos--; } } //+------------------------------------------------------------------+ //| Smoothed Moving Average | //+------------------------------------------------------------------+ void smma() { double sum=0; int i,k,pos=Bars-ExtCountedBars+1; //---- main calculation loop pos=Bars-MA_Period; if(pos>Bars-ExtCountedBars) pos=Bars-ExtCountedBars; while(pos>=0) { if(pos==Bars-MA_Period) { //---- initial accumulation for(i=0,k=pos;i=0) { ExtMapBuffer[pos]=sum/weight; if(pos==0) break; pos--; i--; price=Close[pos]; sum=sum-lsum+price*MA_Period; lsum-=Close[i]; lsum+=price; } //---- zero initial bars if(ExtCountedBars