//+------------------------------------------------------------------+ //| ytg_Trend.mq5 | //| Copyright © 2009, Yuriy Tokman | //| yuriytokman@gmail.com | //+------------------------------------------------------------------+ #property copyright "Copyright © 2009, Yuriy Tokman" #property link "yuriytokman@gmail.com" #property description "Trend indicator" //---- indicator version number #property version "1.00" //---- drawing indicator in a separate window #property indicator_separate_window //---- number of indicator buffers #property indicator_buffers 2 //---- only one plot is used #property indicator_plots 1 //+-----------------------------------+ //| Indicator drawing parameters | //+-----------------------------------+ //---- drawing the indicator as a multy-color histogram #property indicator_type1 DRAW_COLOR_HISTOGRAM //---- the following colors are used in the histogram #property indicator_color1 clrMagenta,clrMediumVioletRed,clrGray,clrTeal,clrLime //---- Indicator line width is equal to 2 #property indicator_width1 2 //---- displaying the indicator label #property indicator_label1 "ytg_Trend" //+-----------------------------------+ //| INDICATOR INPUT PARAMETERS | //+-----------------------------------+ input uint Length=16; //indicator calculation period input int Shift=0; // horizontal shift of the indicator in bars //+-----------------------------------+ //---- declaration of dynamic arrays that will further be // used as indicator buffers double IndBuffer[]; double ColorIndBuffer[]; //---- Declaration of integer variables of data starting point int min_rates_total,Level; //+------------------------------------------------------------------+ //| ytg_Trend indicator initialization function | //+------------------------------------------------------------------+ void OnInit() { //---- Initialization of variables of the start of data calculation min_rates_total=int(Length); Level=min_rates_total-1; //---- set dynamic array as an indicator buffer SetIndexBuffer(0,IndBuffer,INDICATOR_DATA); //---- indexing elements in the buffer as time series ArraySetAsSeries(IndBuffer,true); //---- moving the indicator 1 horizontally 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,0.0); //---- setting dynamic array as a color index buffer SetIndexBuffer(1,ColorIndBuffer,INDICATOR_COLOR_INDEX); //---- indexing elements in the buffer as time series ArraySetAsSeries(ColorIndBuffer,true); //---- initializations of variable for indicator short name string shortname; StringConcatenate(shortname,"ytg_Trend(",Length,", ",Shift,")"); //---- creating name for displaying if separate sub-window and in tooltip IndicatorSetString(INDICATOR_SHORTNAME,shortname); //---- determine the accuracy of displaying indicator values IndicatorSetInteger(INDICATOR_DIGITS,0); //---- the number of the indicator 3 horizontal levels IndicatorSetInteger(INDICATOR_LEVELS,3); //---- values of the indicator horizontal levels IndicatorSetDouble(INDICATOR_LEVELVALUE,0,+Level); IndicatorSetDouble(INDICATOR_LEVELVALUE,1,0); IndicatorSetDouble(INDICATOR_LEVELVALUE,2,-Level); //---- gray and magenta colors are used for horizontal levels lines IndicatorSetInteger(INDICATOR_LEVELCOLOR,0,clrBlue); IndicatorSetInteger(INDICATOR_LEVELCOLOR,1,clrGray); IndicatorSetInteger(INDICATOR_LEVELCOLOR,2,clrBlue); //---- short dot-dash is used for the horizontal level line IndicatorSetInteger(INDICATOR_LEVELSTYLE,0,STYLE_DASHDOTDOT); IndicatorSetInteger(INDICATOR_LEVELSTYLE,1,STYLE_DASHDOTDOT); IndicatorSetInteger(INDICATOR_LEVELSTYLE,2,STYLE_DASHDOTDOT); //---- end of initialization } //+------------------------------------------------------------------+ //| ytg_Trend 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[], const double &low[], 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 the indicator calculation limit=rates_total-min_rates_total-1; // starting index for the calculation of all bars else limit=rates_total-prev_calculated; // starting index for calculation of new bars only //---- indexing elements in arrays as timeseries ArraySetAsSeries(high,true); ArraySetAsSeries(low,true); //---- main indicator calculation loop for(bar=limit; bar>=0 && !IsStopped(); bar--) { rasr=int(Length); price=high[bar]; IndBuffer[bar]=0.0; if(price>high[bar+1]) { k=1; while(price>high[bar+k]) { k++; if(k>rasr)break; } IndBuffer[bar]=+(k-1); } rasr=int(Length); price=low[bar]; if(pricerasr){break;} } IndBuffer[bar]=-(k-1); } ColorIndBuffer[bar]=2; if(IndBuffer[bar]>0) if(IndBuffer[bar]>+Level) ColorIndBuffer[bar]=4; else ColorIndBuffer[bar]=3; if(IndBuffer[bar]<0) if(IndBuffer[bar]<-Level) ColorIndBuffer[bar]=0; else ColorIndBuffer[bar]=1; } //---- return(rates_total); } //+------------------------------------------------------------------+