【解説】 【MQL5 community】 Bulls Power (ブルズパワー):
Bears Power（ベアーズパワー)・Bulls Power（ブルズパワー）とは、 上昇・下落相場の強さを表したのもです。 Bear:熊(→弱気)、Bull:牛(→強気)
【計算式】
BEARS = LOW - EMA(指数移動平均)、
BULLS = HIGH - EMA(指数移動平均)
【シグナル】
ラインが長いほどトレンドが強く、Bulls PowerとBears Powerを合わせて使用する事でトレンドを判断できます。
両方がプラスであれば上昇、両方がマイナスであれば下落の傾向、両方が逆を示す場合は横ばいとなります。
//+------------------------------------------------------------------+
//| Bulls.mq5 |
//| Copyright 2009, MetaQuotes Software Corp. |
//| http://www.mql5.com |
//+------------------------------------------------------------------+
#property copyright "2009, MetaQuotes Software Corp."
#property link "http://www.mql5.com"
#property description "Bulls Power"
//--- indicator settings
#property indicator_separate_window
#property indicator_buffers 2
#property indicator_plots 1
#property indicator_type1 DRAW_HISTOGRAM
#property indicator_color1 Silver
#property indicator_width1 2
//--- input parameters
input int InpBullsPeriod=13; // Period
//--- indicator buffers
double ExtBullsBuffer[];
double ExtTempBuffer[];
//--- MA handle
int ExtEmaHandle;
//+------------------------------------------------------------------+
//| Custom indicator initialization function |
//+------------------------------------------------------------------+
void OnInit()
{
//--- indicator buffers mapping
SetIndexBuffer(0,ExtBullsBuffer,INDICATOR_DATA);
SetIndexBuffer(1,ExtTempBuffer,INDICATOR_CALCULATIONS);
//--- set accuracy
IndicatorSetInteger(INDICATOR_DIGITS,_Digits+1);
//--- sets first bar from what index will be drawn
PlotIndexSetInteger(0,PLOT_DRAW_BEGIN,InpBullsPeriod-1);
//--- name for DataWindow and indicator subwindow label
IndicatorSetString(INDICATOR_SHORTNAME,"Bulls("+(string)InpBullsPeriod+")");
//--- get handle for MA
ExtEmaHandle=iMA(NULL,0,InpBullsPeriod,0,MODE_EMA,PRICE_CLOSE);
//--- initialization done
}
//+------------------------------------------------------------------+
//| Average True Range |
//+------------------------------------------------------------------+
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;
//--- check for bars count
if(rates_total＜InpBullsPeriod)
return(0);// not enough bars for calculation
//--- not all data may be calculated
int calculated=BarsCalculated(ExtEmaHandle);
if(calculated＜rates_total)
{
Print("Not all data of ExtEmaHandle is calculated (",calculated,"bars ). Error",GetLastError());
return(0);
}
//--- we can copy not all data
int to_copy;
if(prev_calculated>rates_total || prev_calculated＜0) to_copy=rates_total;
else
{
to_copy=rates_total-prev_calculated;
if(prev_calculated>0) to_copy++;
}
//---- get ma buffers
if(CopyBuffer(ExtEmaHandle,0,0,to_copy,ExtTempBuffer)＜=0)
{
Print("getting ExtEmaHandle is failed! Error",GetLastError());
return(0);
}
//--- first calculation or number of bars was changed
if(prev_calculated＜InpBullsPeriod)
limit=InpBullsPeriod;
else limit=prev_calculated-1;
//--- the main loop of calculations
for(i=limit;i＜rates_total;i++)
{
ExtBullsBuffer[i]=High[i]-ExtTempBuffer[i];
}
//--- return value of prev_calculated for next call
return(rates_total);
}
//+------------------------------------------------------------------+
【表示結果】
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