//+------------------------------------------------------------------+ //| DecEMA.mq5 | //| Developed by Coders Guru | //| http://www.xpworx.com | //| Revised by IgorAD,igorad2003@yahoo.co.uk | //| http://www.forex-tsd.com/ | //+------------------------------------------------------------------+ #property copyright "Copyright © 2008, Guru" #property link "farria@mail.redcom.ru" //---- indicator version number #property version "1.01" //---- drawing the indicator in the main window #property indicator_chart_window //---- number of indicator buffers #property indicator_buffers 1 //---- only one plot is used #property indicator_plots 1 //+-----------------------------------+ //| Indicator drawing parameters | //+-----------------------------------+ //---- drawing the indicator as a line #property indicator_type1 DRAW_LINE //---- pink color is used as the color of the bullish line of the indicator #property indicator_color1 clrRed //---- the indicator line is a continuous curve #property indicator_style1 STYLE_SOLID //---- indicator line width is equal to 1 #property indicator_width1 1 //---- displaying the indicator label #property indicator_label1 "DecEMA" //+-----------------------------------+ //| CXMA class description | //+-----------------------------------+ #include //+-----------------------------------+ //---- declaration of the CXMA class variables from the SmoothAlgorithms.mqh file CXMA XMA1; //+-----------------------------------+ //| Declaration of enumerations | //+-----------------------------------+ enum Applied_price_ //Type od constant { PRICE_CLOSE_ = 1, //Close PRICE_OPEN_, //Open PRICE_HIGH_, //High PRICE_LOW_, //Low PRICE_MEDIAN_, //Median Price (HL/2) PRICE_TYPICAL_, //Typical Price (HLC/3) PRICE_WEIGHTED_, //Weighted Close (HLCC/4) PRICE_SIMPL_, //Simpl Price (OC/2) PRICE_QUARTER_, //Quarted Price (HLOC/4) PRICE_TRENDFOLLOW0_, //TrendFollow_1 Price PRICE_TRENDFOLLOW1_, //TrendFollow_2 Price PRICE_DEMARK_ //Demark Price }; //+-----------------------------------+ //| INDICATOR INPUT PARAMETERS | //+-----------------------------------+ input uint EMA_Period=3; //EMA period input int ELength=15; // depth of smoothing input Applied_price_ IPC=PRICE_CLOSE;//price constant /* , used for calculation of the indicator ( 1-CLOSE, 2-OPEN, 3-HIGH, 4-LOW, 5-MEDIAN, 6-TYPICAL, 7-WEIGHTED, 8-SIMPL, 9-QUARTER, 10-TRENDFOLLOW, 11-0.5 * TRENDFOLLOW, 12-DEMARK.) */ input int Shift=0; // horizontal shift of the indicator in bars input int PriceShift=0; // vertical shift of the indicator in pointsõ //+-----------------------------------+ //---- indicator buffer double IndBuffer[]; //---- declaration of the integer variables for the start of data calculation int min_rates_total; //---- Declaration of global variables double alfa,dPriceShift; //+------------------------------------------------------------------+ //| DecEMA indicator initialization function | //+------------------------------------------------------------------+ void OnInit() { //---- initialization of variables of the start of data calculation min_rates_total=2; alfa=2.0/(1.0+ELength); //---- Initialization of the vertical shift dPriceShift=_Point*PriceShift; //---- set dynamic array as an indicator buffer SetIndexBuffer(0,IndBuffer,INDICATOR_DATA); //---- shifting the indicator horizontally by Shift PlotIndexSetInteger(0,PLOT_SHIFT,Shift); //---- performing the shift of beginning of indicator drawing PlotIndexSetInteger(0,PLOT_DRAW_BEGIN,min_rates_total); //---- setting the indicator values that won't be visible on a chart PlotIndexSetDouble(0,PLOT_EMPTY_VALUE,EMPTY_VALUE); //---- initializations of variable for indicator short name string shortname; StringConcatenate(shortname,"DecEMA(",EMA_Period,",",ELength,")"); //--- creation of the name to be displayed in a separate sub-window and in a pop up help IndicatorSetString(INDICATOR_SHORTNAME,shortname); //--- determining the accuracy of displaying the indicator values IndicatorSetInteger(INDICATOR_DIGITS,_Digits+1); //---- end of initialization } //+------------------------------------------------------------------+ //| DecEMA iteration function | //+------------------------------------------------------------------+ int OnCalculate( const int rates_total, // amount of history in bars at the current tick const int prev_calculated,// amount of history in bars at the previous tick const datetime &time[], const double &open[], const double& high[], // price array of maximums of price for the calculation of indicator const double& low[], // price array of price lows for the indicator calculation const double &close[], const long &tick_volume[], const long &volume[], const int &spread[] ) { //---- checking the number of bars to be enough for calculation if(rates_totalrates_total || prev_calculated<=0) // checking for the first start of calculation of an indicator { first=1; // starting number for calculation of all bars //---- Initialization of coefficients sdEMA1=PriceSeries(IPC,first-1,open,low,high,close); sdEMA2=sdEMA1; sdEMA3=sdEMA1; sdEMA4=sdEMA1; sdEMA5=sdEMA1; sdEMA6=sdEMA1; sdEMA7=sdEMA1; sdEMA8=sdEMA1; sdEMA9=sdEMA1; sdEMA10=sdEMA1; } else first=prev_calculated-1; // starting number for calculation of new bars //---- variables restoring EMA1=sdEMA1; EMA2=sdEMA2; EMA3=sdEMA3; EMA4=sdEMA4; EMA5=sdEMA5; EMA6=sdEMA6; EMA7=sdEMA7; EMA8=sdEMA8; EMA9=sdEMA9; EMA10=sdEMA10; maxbar=rates_total-1; //---- main indicator calculation loop for(bar=first; bar