【解説】【MQL5 community】 Price Channel : Price_Channel : レジスタンスとサポートを図示するインディケーター。 これが見づらいということで単に改良したもの。
移動平均と同様で、ロウソク足がピンクの線を下から上に抜けた場合、買いシグナル、 逆に上から下へ抜けた場合には、売りシグナルとなる。 また雲の外へロウソク足が抜けた(レジスタンスやサポートを破った)場合には、新たなトレンドの可能性が発生する場合がある。
//+------------------------------------------------------------------+
//| iS7N_PriceChannel.mq5 |
//| Copyright, 2010 SHOOTER777 |
//| s7n@yandex.ru |
//+------------------------------------------------------------------+
#property copyright "2010, SHOOTER777"
#property link "s7n@yandex.ru"
//--- indicator settings
#property indicator_chart_window
#property indicator_buffers 3
#property indicator_plots 3
#property indicator_type1 DRAW_LINE
#property indicator_type2 DRAW_LINE
#property indicator_type3 DRAW_LINE
#property indicator_color1 Magenta
#property indicator_color2 Magenta
#property indicator_color3 Magenta
#property indicator_width1 2
#property indicator_width2 2
#property indicator_width3 1
#property indicator_label1 "Channel upper"
#property indicator_label2 "Channel lower"
#property indicator_label3 "Channel median"
//--- input parameters
input int InpChannelPeriod=10; // Period
//--- indicator buffers
double ExtHighBuffer[];
double ExtLowBuffer[];
double ExtMiddBuffer[];
//+------------------------------------------------------------------+
//| Custom indicator initialization function |
//+------------------------------------------------------------------+
void OnInit()
{
//--- indicator buffers mapping
SetIndexBuffer(0,ExtHighBuffer,INDICATOR_DATA);
SetIndexBuffer(1,ExtLowBuffer,INDICATOR_DATA);
SetIndexBuffer(2,ExtMiddBuffer,INDICATOR_DATA);
//--- set accuracy
IndicatorSetInteger(INDICATOR_DIGITS,_Digits-1);
//--- set first bar from what index will be drawn
PlotIndexSetInteger(0,PLOT_DRAW_BEGIN,InpChannelPeriod);
//---- line shifts when drawing
PlotIndexSetInteger(0,PLOT_SHIFT,1);
PlotIndexSetInteger(1,PLOT_SHIFT,1);
PlotIndexSetInteger(2,PLOT_SHIFT,1);
//--- name for DataWindow and indicator label
IndicatorSetString(INDICATOR_SHORTNAME,"Price Channel("+string(InpChannelPeriod)+")");
PlotIndexSetString(0,PLOT_LABEL,"Channel("+string(InpChannelPeriod)+") upper");
PlotIndexSetString(1,PLOT_LABEL,"Channel("+string(InpChannelPeriod)+") lower");
PlotIndexSetString(2,PLOT_LABEL,"Median("+string(InpChannelPeriod)+")");
//--- set drawing line empty value
PlotIndexSetDouble(0,PLOT_EMPTY_VALUE,0.0);
PlotIndexSetDouble(1,PLOT_EMPTY_VALUE,0.0);
PlotIndexSetDouble(2,PLOT_EMPTY_VALUE,0.0);
//--- initialization done
}
//+------------------------------------------------------------------+
//| get highest value for range |
//+------------------------------------------------------------------+
double Highest(const double &array[],int range,int fromIndex)
{
double res;
int i;
//---
res=array[fromIndex];
for(i=fromIndex;i>fromIndex-range && i>=0;i--)
{
if(res＜array[i]) res=array[i];
}
//---
return(res);
}
//+------------------------------------------------------------------+
//| get lowest value for range |
//+------------------------------------------------------------------+
double Lowest(const double &array[],int range,int fromIndex)
{
double res;
int i;
//---
res=array[fromIndex];
for(i=fromIndex;i>fromIndex-range && i>=0;i--)
{
if(res>array[i]) res=array[i];
}
//---
return(res);
}
//+------------------------------------------------------------------+
//| Price Channell |
//+------------------------------------------------------------------+
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 rates
if(rates_total＜InpChannelPeriod)
return(0);
//--- preliminary calculations
if(prev_calculated==0)
limit=InpChannelPeriod;
else limit=prev_calculated-1;
//--- the main loop of calculations
for(i=limit;i＜rates_total;i++)
{
ExtHighBuffer[i]=Highest(High,InpChannelPeriod,i);
ExtLowBuffer[i]=Lowest(Low,InpChannelPeriod,i);
ExtMiddBuffer[i]=(ExtHighBuffer[i]+ExtLowBuffer[i])/2.0;;
}
//--- OnCalculate done. Return new prev_calculated.
return(rates_total);
}
//+------------------------------------------------------------------+
【表示結果】
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