【解説】 【MQL5 community】 DeMarker (デマーカー): あるロウソク足から次のロウソク足までの価格を比較し、 価格需要レベルを測ることにより、 潜在的な天井値と底値とを見つけるための指標です。 とができます
【計算法】
i期のDeMarkerはDeMax(i)とDeMin(i)から計算される.
■DeMax(i):
もし high(i) > high(i-1) であるならば,
DeMax(i) = high(i)-high(i-1)
とし、そうでなければ、DeMax(i) = 0
■The DeMin(i):
もし low(i) < low(i-1) であるならば,
DeMin(i) = low(i-1)-low(i)
とし、そうでなければ、DeMin(i) = 0
■DeMarkerは上の2つを使い、
DMark(i) = SMA(DeMax, N)/(SMA(DeMax, N)+SMA(DeMin, N))
ただし、SMA は単純移動平均、N は任意の期間。
【シグナル】
「売り」: 指標が下降し、価格が天井値付近にある時に買い 指標が0.5を上から下抜けた時に買い 0.7以上の数値を示した時に買われ過ぎと見なし、売り
「買い」: 指標が上昇し、価格が底値付近にある時に買い 指標が0.50を下から上抜けた時に買い 0.30以下の数値を示した時に売られ過ぎと見なし、買い
//+------------------------------------------------------------------+ //| DeMarker.mq5 | //| Copyright 2009, MetaQuotes Software Corp. | //| http://www.mql5.com | //+------------------------------------------------------------------+ #property copyright "2009, MetaQuotes Software Corp." #property link "http://www.mql5.com" #include <MovingAverages.mqh> //--- indicator settings #property indicator_separate_window #property indicator_buffers 5 #property indicator_plots 1 #property indicator_type1 DRAW_LINE #property indicator_color1 DodgerBlue #property indicator_level1 0.3 #property indicator_level2 0.7 //--- input parameters input int InpDeMarkerPeriod=14; // Period //--- indicator buffers double ExtDeMarkerBuffer[]; double ExtDeMaxBuffer[]; double ExtDeMinBuffer[]; double ExtAvgDeMaxBuffer[]; double ExtAvgDeMinBuffer[]; //+------------------------------------------------------------------+ //| Custom indicator initialization function | //+------------------------------------------------------------------+ void OnInit() { //--- indicator buffers mapping SetIndexBuffer(0,ExtDeMarkerBuffer,INDICATOR_DATA); SetIndexBuffer(1,ExtDeMaxBuffer,INDICATOR_CALCULATIONS); SetIndexBuffer(2,ExtDeMinBuffer,INDICATOR_CALCULATIONS); SetIndexBuffer(3,ExtAvgDeMaxBuffer,INDICATOR_CALCULATIONS); SetIndexBuffer(4,ExtAvgDeMinBuffer,INDICATOR_CALCULATIONS); //--- set accuracy IndicatorSetInteger(INDICATOR_DIGITS,3); //--- sets first bar from what index will be drawn PlotIndexSetInteger(0,PLOT_DRAW_BEGIN,InpDeMarkerPeriod); //--- name for DataWindow and indicator subwindow label IndicatorSetString(INDICATOR_SHORTNAME,"DeM("+string(InpDeMarkerPeriod)+")"); //--- initialization done } //+------------------------------------------------------------------+ //| DeMarker | //+------------------------------------------------------------------+ int OnCalculate(const int rates_total,const int prev_calculated, const datetime &Time[], const double &Open[], const double &High[], const double &Low[], const double &Close[], const long &TickVolume[], const long &Volume[], const int &Spread[]) { int i,limit; double dNum; //--- check for bars count if(rates_total<InpDeMarkerPeriod) return(0); //--- preliminary calculations if(prev_calculated==0) { ExtDeMaxBuffer[0]=0.0; ExtDeMinBuffer[0]=0.0; //--- filling out the array of True Range values for each period for(i=1;i<InpDeMarkerPeriod;i++) { if(High[i]>High[i-1]) ExtDeMaxBuffer[i]=High[i]-High[i-1]; else ExtDeMaxBuffer[i]=0.0; if(Low[i-1]>Low[i]) ExtDeMinBuffer[i]=Low[i-1]-Low[i]; else ExtDeMinBuffer[i]=0.0; } for(i=0;i<InpDeMarkerPeriod;i++) ExtDeMarkerBuffer[i]=0.0; limit=InpDeMarkerPeriod-1; } else limit=prev_calculated-1; //--- the main loop of calculations for(i=limit;i<rates_total;i++) { if(High[i]>High[i-1]) ExtDeMaxBuffer[i]=High[i]-High[i-1]; else ExtDeMaxBuffer[i]=0.0; if(Low[i-1]>Low[i]) ExtDeMinBuffer[i]=Low[i-1]-Low[i]; else ExtDeMinBuffer[i]=0.0; ExtAvgDeMaxBuffer[i]=SimpleMA(i,InpDeMarkerPeriod,ExtDeMaxBuffer); ExtAvgDeMinBuffer[i]=SimpleMA(i,InpDeMarkerPeriod,ExtDeMinBuffer); dNum=ExtAvgDeMaxBuffer[i]+ExtAvgDeMinBuffer[i]; if(dNum!=0) ExtDeMarkerBuffer[i]=ExtAvgDeMaxBuffer[i]/dNum; else ExtDeMarkerBuffer[i]=0.0; } //--- OnCalculate done. Return new prev_calculated. return(rates_total); } //+------------------------------------------------------------------+
【表示結果】
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