Name: Stochastic Oscillator, Stochastic Author: MetaQuotes Rating: Not rated Downloaded: 223 times Download: Stochastic.mq4 (3.8 Kb) View Description: The Stochastic Oscillator Technical Indicator compares where a security’s price closed relative to its price range over a given time period. The Stochastic Oscillator is displayed as two lines. The main line is called %K. The second line, called %D, is a Moving Average of %K. The %K line is usually displayed as a solid line and the %D line is usually displayed as a dotted line. There are several ways to interpret a Stochastic Oscillator. Three popular methods include: Buy when the Oscillator (either %K or %D) falls below a specific level (e.g., 20) and then rises above that level. Sell when the Oscillator rises above a specific level (e.g., 80) and then falls below that level; Buy when the %K line rises above the %D line and sell when the %K line falls below the %D line; Look for divergences. For instance: where prices are making a series of new highs and the Stochastic Oscillator is failing to surpass its previous highs. Calculation The Stochastic Oscillator has three variables: %K periods (Pk). This is the number of time periods used in %K calculation. By default is 5; %K Slowing Periods (Sk). This value controls the internal smoothing of %K. A value of 1 is considered a fast stochastic; a value of 3 is considered a slow stochastic. By default is 3; %D periods (Pd). This is the number of time periods used when calculating a moving average of %K. By default is 3; The formula for %K is: %K = 100*SUM (CLOSE - MIN (LOW, Pk), Sk) / SUM (MAX (HIGH, Pk) - MIN (LOW, Pk)), Sk) Where: CLOSE — is today’s closing price; MIN (LOW, Pk) — is the lowest low in Pk periods; MAX (HIGH, Pk) — is the highest high in Pk periods. SUM (CLOSE - MIN (LOW, Pk), Sk) — amount composed CLOSE - MIN (LOW, Pk) for period Sk; SUM (MAX (HIGH, Pk) - MIN (LOW, Pk)), Sk) — amount composed HIGH (Pk)) - MIN (LOW, Pk) for period Sk. The %D moving average is calculated according to the formula: %D = SMA (%K, Pd) Where: Pd — is the smoothing period for %K; SMA — is the Simple Moving Average 以上E文来自于MT4的官方网站，我根据上面的公式导入飞狐，出现调用参数不符的错误，我简单的调整了一下，发现有个括号出现了问题，得出以下的公式 K:SUM(CLOSE-MIN(LOW, Pk),Sk)/SUM(MAX(HIGH, Pk)-MIN(LOW,Pk),Sk); D:SMA(K,Pd,1) 结果显示出的指标与MT4完全不一样！，求高手指点 Stochastic Oscillator指标 原码 #property copyright "Copyright ?2004, MetaQuotes Software Corp." #property link "http://www.metaquotes.net/" #property indicator_separate_window #property indicator_minimum 0 #property indicator_maximum 100 #property indicator_buffers 2 #property indicator_color1 LightSeaGreen #property indicator_color2 Red //---- input parameters extern int KPeriod=5; extern int DPeriod=3; extern int Slowing=3; //---- buffers double MainBuffer; double SignalBuffer; double HighesBuffer; double LowesBuffer; //---- int draw_begin1=0; int draw_begin2=0; //+------------------------------------------------------------------+ //| Custom indicator initialization function | //+------------------------------------------------------------------+ int init() { string short_name; //---- 2 additional buffers are used for counting. IndicatorBuffers(4); SetIndexBuffer(2, HighesBuffer); SetIndexBuffer(3, LowesBuffer); //---- indicator lines SetIndexStyle(0,DRAW_LINE); SetIndexBuffer(0, MainBuffer); SetIndexStyle(1,DRAW_LINE); SetIndexBuffer(1, SignalBuffer); //---- name for DataWindow and indicator subwindow label short_name="Sto("+KPeriod+","+DPeriod+","+Slowing+")"; IndicatorShortName(short_name); SetIndexLabel(0,short_name); SetIndexLabel(1,"Signal"); //---- draw_begin1=KPeriod+Slowing; draw_begin2=draw_begin1+DPeriod; SetIndexDrawBegin(0,draw_begin1); SetIndexDrawBegin(1,draw_begin2); //---- return(0); } //+------------------------------------------------------------------+ //| Stochastic oscillator | //+------------------------------------------------------------------+ int start() { int i,k; int counted_bars=IndicatorCounted(); double price; //---- if(Bars<=draw_begin2) return(0); //---- initial zero if(counted_bars<1) { for(i=1;i<=draw_begin1;i++) MainBuffer[Bars-i]=0; for(i=1;i<=draw_begin2;i++) SignalBuffer[Bars-i]=0; } //---- minimums counting i=Bars-KPeriod; if(counted_bars>KPeriod) i=Bars-counted_bars-1; while(i>=0) { double min=1000000; k=i+KPeriod-1; while(k>=i) { price=Low[k]; if(min>price) min=price; k--; } LowesBuffer=min; i--; } //---- maximums counting i=Bars-KPeriod; if(counted_bars>KPeriod) i=Bars-counted_bars-1; while(i>=0) { double max=-1000000; k=i+KPeriod-1; while(k>=i) { price=High[k]; if(maxdraw_begin1) i=Bars-counted_bars-1; while(i>=0) { double sumlow=0.0; double sumhigh=0.0; for(k=(i+Slowing-1);k>=i;k--) { sumlow+=Close[k]-LowesBuffer[k]; sumhigh+=HighesBuffer[k]-LowesBuffer[k]; } if(sumhigh==0.0) MainBuffer=100.0; else MainBuffer=sumlow/sumhigh*100; i--; } //---- last counted bar will be recounted if(counted_bars>0) counted_bars--; int limit=Bars-counted_bars; //---- signal line is simple movimg average for(i=0; i