//+------------------------------------------------------------------+ //| i_Trend.mq5 | //| Copyright © 2007, NNN | //| | //+------------------------------------------------------------------+ #property copyright "Copyright © 2007, NNN" #property link "" //--- Indicator version #property version "1.00" //--- drawing the indicator in a separate window #property indicator_separate_window //---- number of indicator buffers is 2 #property indicator_buffers 2 //---- one plot is used #property indicator_plots 1 //+-----------------------------------+ //| Parameters of indicator drawing | //+-----------------------------------+ //---- drawing the indicator as a colored cloud #property indicator_type1 DRAW_FILLING //---- the following colors are used as the indicator colors #property indicator_color1 clrPaleGreen,clrHotPink //---- displaying the indicator label #property indicator_label1 "i_Trend" //+-----------------------------------+ //| Declaration of constants | //+-----------------------------------+ #define RESET 0 // a constant for returning the indicator recalculation command to the terminal //+-----------------------------------+ //| Declaration of enumerations | //+-----------------------------------+ enum Mode // Type of constant { Mode_1 = 0, // Baseline Mode_2, // Upper line Mode_3 // Lower line }; //+----------------------------------------------+ //| declaration of enumerations | //+----------------------------------------------+ enum Applied_price_ // type of 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_, // Simple 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 Applied_price_ Price_Type=PRICE_CLOSE_; //--- Moving Average parameters input uint MAPeriod=13; input ENUM_MA_METHOD MAType=MODE_EMA; input ENUM_APPLIED_PRICE MAPrice=PRICE_CLOSE; //--- Bollinger parameters input uint BBPeriod=20; input double deviation=2.0; input ENUM_APPLIED_PRICE BBPrice=PRICE_CLOSE; input Mode BBMode=Mode_1; //+-----------------------------------+ //--- declaration of integer variables for the start of data calculation int min_rates_total; //--- declaration of dynamic arrays that will be used as indicator buffers double ExtABuffer[]; double ExtBBuffer[]; //--- declaration of integer variables for the indicators handles int MA_Handle,BB_Handle; //+------------------------------------------------------------------+ //| Custom indicator initialization function | //+------------------------------------------------------------------+ int OnInit() { //--- initialization of variables of the start of data calculation min_rates_total=int(MathMax(MAPeriod,BBPeriod)); //--- getting the handle of the iMA indicator MA_Handle=iMA(NULL,0,MAPeriod,0,MAType,MAPrice); if(MA_Handle==INVALID_HANDLE) { Print(" Failed to get the handle of iMA"); return(INIT_FAILED); } //--- getting the handle of iBB BB_Handle=iBands(NULL,0,BBPeriod,0,deviation,BBPrice); if(BB_Handle==INVALID_HANDLE) { Print(" Failed to get the handle of iBB"); return(INIT_FAILED); } //--- Set dynamic array as an indicator buffer SetIndexBuffer(0,ExtABuffer,INDICATOR_DATA); //--- Indexing elements in the buffer as in timeseries ArraySetAsSeries(ExtABuffer,true); //--- Set dynamic array as an indicator buffer SetIndexBuffer(1,ExtBBuffer,INDICATOR_DATA); //--- Indexing elements in the buffer as in timeseries ArraySetAsSeries(ExtBBuffer,true); //--- shifting the start of drawing of the indicator 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); //--- creation of the name to be displayed in a separate sub-window and in a pop up help IndicatorSetString(INDICATOR_SHORTNAME,"i_Trend"); //--- determining the accuracy of the indicator values IndicatorSetInteger(INDICATOR_DIGITS,_Digits+1); //--- initialization end return(INIT_SUCCEEDED); } //+------------------------------------------------------------------+ //| Custom indicator iteration function | //+------------------------------------------------------------------+ int OnCalculate(const int rates_total, // number of bars in history 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[], const double &low[], const double &close[], const long &tick_volume[], const long &volume[], const int &spread[]) { //--- checking if the number of bars is enough for the calculation if(BarsCalculated(MA_Handle)rates_total || prev_calculated<=0)// Checking for the first start of the indicator calculation limit=rates_total-min_rates_total-1; // Starting index for calculation of all bars else limit=rates_total-prev_calculated; // starting index for calculation of new bars only //--- indexing elements in arrays as in timeseries ArraySetAsSeries(BB,true); ArraySetAsSeries(MA,true); ArraySetAsSeries(low,true); ArraySetAsSeries(high,true); ArraySetAsSeries(open,true); ArraySetAsSeries(close,true); //--- to_copy=limit+1; //--- copy newly appeared data in the arrays if(CopyBuffer(MA_Handle,0,0,to_copy,MA)<=0) return(RESET); if(CopyBuffer(BB_Handle,int(BBMode),0,to_copy,BB)<=0) return(RESET); //--- main indicator calculation loop for(int bar=limit; bar>=0 && !IsStopped(); bar--) { price=PriceSeries(Price_Type,bar,open,low,high,close); ExtABuffer[bar]=price-BB[bar]; ExtBBuffer[bar]=-(low[bar]+high[bar]-2*MA[bar]); } //--- return(rates_total); } //+------------------------------------------------------------------+ //| Getting values of a price time series | //+------------------------------------------------------------------+ double PriceSeries(uint applied_price, // Price constant uint bar, // Index of shift relative to the current bar for a specified number of periods back or forward). const double &Open[], const double &Low[], const double &High[], const double &Close[]) { //--- switch(applied_price) { //--- price constants from the ENUM_APPLIED_PRICE enumeration case PRICE_CLOSE: return(Close[bar]); case PRICE_OPEN: return(Open [bar]); case PRICE_HIGH: return(High [bar]); case PRICE_LOW: return(Low[bar]); case PRICE_MEDIAN: return((High[bar]+Low[bar])/2.0); case PRICE_TYPICAL: return((Close[bar]+High[bar]+Low[bar])/3.0); case PRICE_WEIGHTED: return((2*Close[bar]+High[bar]+Low[bar])/4.0); //--- case 8: return((Open[bar] + Close[bar])/2.0); case 9: return((Open[bar] + Close[bar] + High[bar] + Low[bar])/4.0); //--- case 10: { if(Close[bar]>Open[bar])return(High[bar]); else { if(Close[bar]Open[bar])return((High[bar]+Close[bar])/2.0); else { if(Close[bar]Open[bar]) res=(res+High[bar])/2; if(Close[bar]==Open[bar]) res=(res+Close[bar])/2; return(((res-Low[bar])+(res-High[bar]))/2); } //--- default: return(Close[bar]); } //--- } //+------------------------------------------------------------------+