【解説】【MQL5 community】 Color Line (カラー・ライン): 移動平均を色つきのラインで示す。 5 Ticks(5回)の取引ごとに色が変わる.
//+------------------------------------------------------------------+
//| ColorLine.mq5 |
//| Copyright 2009, MetaQuotes Software Corp. |
//| http://www.mql5.com |
//+------------------------------------------------------------------+
#property copyright "2009, MetaQuotes Software Corp."
#property link "http://www.mql5.com"
#property indicator_chart_window
#property indicator_buffers 2
#property indicator_plots 1
//---- plot ColorLine
#property indicator_label1 "ColorLine"
#property indicator_type1 DRAW_COLOR_LINE
#property indicator_color1 Red,Green,Blue
#property indicator_style1 STYLE_SOLID
#property indicator_width1 3
//--- indicator buffers
double ExtColorLineBuffer[];
double ExtColorsBuffer[];
//---
int ExtMAHandle;
//+------------------------------------------------------------------+
//| Custom indicator initialization function |
//+------------------------------------------------------------------+
void OnInit()
{
//--- indicator buffers mapping
SetIndexBuffer(0,ExtColorLineBuffer,INDICATOR_DATA);
SetIndexBuffer(1,ExtColorsBuffer,INDICATOR_COLOR_INDEX);
//--- get MA handle
ExtMAHandle=iMA(Symbol(),0,10,0,MODE_EMA,PRICE_CLOSE);
}
//+------------------------------------------------------------------+
//| get color index |
//+------------------------------------------------------------------+
int getIndexOfColor(int i)
{
int j=i%300;
if(j＜100) return(0);// first index
if(j＜200) return(1);// second index
return(2); // third index
}
//+------------------------------------------------------------------+
//| Custom indicator iteration function |
//+------------------------------------------------------------------+
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 &tick_volume[],
const long &volume[],
const int &spread[])
{
//---
static int ticks=0,modified=0;
int limit;
//--- check data
int calculated=BarsCalculated(ExtMAHandle);
if(calculated＜rates_total)
{
Print("Not all data of ExtMAHandle is calculated (",calculated,"bars ). Error",GetLastError());
return(0);
}
//--- first calculation or number of bars was changed
if(prev_calculated==0)
{
//--- copy values of MA into indicator buffer ExtColorLineBuffer
if(CopyBuffer(ExtMAHandle,0,0,rates_total,ExtColorLineBuffer)＜=0) return(0);
//--- now set line color for every bar
for(int i=0;i＜rates_total;i++)
ExtColorsBuffer[i]=getIndexOfColor(i);
}
else
{
//--- 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++;
}
//--- copy values of MA into indicator buffer ExtColorLineBuffer
int copied=CopyBuffer(ExtMAHandle,0,0,rates_total,ExtColorLineBuffer);
if(copied＜=0) return(0);
ticks++;// ticks counting
if(ticks>=5)//it's time to change color scheme
{
ticks=0; // reset counter
modified++; // counter of color changes
if(modified>=3)modified=0;// reset counter
ResetLastError();
switch(modified)
{
case 0:// first color scheme
PlotIndexSetInteger(0,PLOT_LINE_COLOR,0,Red);
PlotIndexSetInteger(0,PLOT_LINE_COLOR,1,Blue);
PlotIndexSetInteger(0,PLOT_LINE_COLOR,2,Green);
//Print("Color scheme"+modified);
break;
case 1:// second color scheme
PlotIndexSetInteger(0,PLOT_LINE_COLOR,0,Yellow);
PlotIndexSetInteger(0,PLOT_LINE_COLOR,1,Pink);
PlotIndexSetInteger(0,PLOT_LINE_COLOR,2,LightSlateGray);
//Print("Color scheme"+modified);
break;
default:// third color scheme
PlotIndexSetInteger(0,PLOT_LINE_COLOR,0,LightGoldenrod);
PlotIndexSetInteger(0,PLOT_LINE_COLOR,1,Orchid);
PlotIndexSetInteger(0,PLOT_LINE_COLOR,2,LimeGreen);
//Print("Color scheme"+modified);
}
}
else
{
//--- set start position
limit=prev_calculated-1;
//--- now we set line color for every bar
for(int i=limit;i＜rates_total;i++)
ExtColorsBuffer[i]=getIndexOfColor(i);
}
}
//--- return value of prev_calculated for next call
return(rates_total);
}
//+------------------------------------------------------------------+
【表示結果】
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