| #property copyright 'yee' #property link 'https://blog.51cto.com/noican' #property indicator_separate_window #property indicator_buffers 1 #property indicator_color1 PaleVioletRed #property indicator_width1 2 // // // // // extern int StdDevLen = 14; extern int StdDevPrice = PRICE_TYPICAL; extern int StdDevMaMode = MODE_EMA; extern int NormalizationPeriod = 50; // // // // // double width[]; double devs[]; //+------------------------------------------------------------------+ //| | //+------------------------------------------------------------------+ int init() { IndicatorBuffers(2); SetIndexBuffer(0, width); SetIndexBuffer(1, devs); IndicatorShortName(' BB width normalized ('+StdDevLen+')'); return(0); } int deinit() { return(0); } //+------------------------------------------------------------------+ //| | //+------------------------------------------------------------------+ int start() { int i,limit,counted_bars = IndicatorCounted(); if(counted_bars<0) return(-1); if(counted_bars>0) counted_bars--; limit = MathMin(Bars - counted_bars,Bars-1); // // // // // for(i = limit; i >= 0 ; i--) { devs[i] = iStdDev(NULL,0,StdDevLen,0,StdDevMaMode,StdDevPrice,i); double max = devs[ArrayMaximum(devs,NormalizationPeriod,i)]; double min = devs[ArrayMinimum(devs,NormalizationPeriod,i)]; if (max!=min) width[i] = 100.0*(devs[i] - min) / (max-min); else width[i] = 0; } return(0); } |
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