mirror of
https://github.com/softwaredevelop/mql5.git
synced 2026-08-12 20:08:05 +00:00
86 lines
3.2 KiB
Plaintext
86 lines
3.2 KiB
Plaintext
//+------------------------------------------------------------------+
|
|
//| Holt_MA.mq5 |
|
|
//| Copyright 2025, xxxxxxxx|
|
|
//+------------------------------------------------------------------+
|
|
#property copyright "Copyright 2025, xxxxxxxx"
|
|
#property version "2.00"
|
|
#property description "Holt's Linear Trend Method (Double Exponential Smoothing)."
|
|
|
|
#property indicator_chart_window
|
|
#property indicator_buffers 1
|
|
#property indicator_plots 1
|
|
|
|
#include <MyIncludes\Holt_Calculator.mqh>
|
|
|
|
//--- Plot 1: Holt MA Forecast Line
|
|
#property indicator_label1 "Holt MA"
|
|
#property indicator_type1 DRAW_LINE
|
|
#property indicator_color1 clrMediumSeaGreen
|
|
#property indicator_style1 STYLE_SOLID
|
|
#property indicator_width1 2
|
|
|
|
//--- Input Parameters ---
|
|
input int InpPeriod = 20;
|
|
input double InpAlpha = 0.1;
|
|
input double InpBeta = 0.05;
|
|
input ENUM_APPLIED_PRICE InpSourcePrice = PRICE_CLOSE;
|
|
|
|
//--- Indicator Buffers ---
|
|
double BufferHoltMA[];
|
|
|
|
//--- Global calculator object ---
|
|
CHoltMACalculator *g_calculator;
|
|
|
|
//+------------------------------------------------------------------+
|
|
//| Custom indicator initialization function. |
|
|
//+------------------------------------------------------------------+
|
|
int OnInit()
|
|
{
|
|
SetIndexBuffer(0, BufferHoltMA, INDICATOR_DATA);
|
|
ArraySetAsSeries(BufferHoltMA, false);
|
|
|
|
PlotIndexSetInteger(0, PLOT_DRAW_BEGIN, 2);
|
|
IndicatorSetString(INDICATOR_SHORTNAME, StringFormat("Holt MA(%d, %.2f, %.2f)", InpPeriod, InpAlpha, InpBeta));
|
|
|
|
g_calculator = new CHoltMACalculator();
|
|
if(CheckPointer(g_calculator) == POINTER_INVALID || !g_calculator.Init(InpPeriod, InpAlpha, InpBeta))
|
|
{
|
|
Print("Failed to initialize Holt MA Calculator.");
|
|
return(INIT_FAILED);
|
|
}
|
|
return(INIT_SUCCEEDED);
|
|
}
|
|
|
|
//+------------------------------------------------------------------+
|
|
//| Custom indicator deinitialization function. |
|
|
//+------------------------------------------------------------------+
|
|
void OnDeinit(const int reason)
|
|
{
|
|
if(CheckPointer(g_calculator) != POINTER_INVALID)
|
|
delete g_calculator;
|
|
}
|
|
|
|
//+------------------------------------------------------------------+
|
|
//| 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[])
|
|
{
|
|
if(CheckPointer(g_calculator) != POINTER_INVALID)
|
|
{
|
|
double dummy_trend[];
|
|
g_calculator.Calculate(rates_total, InpSourcePrice, open, high, low, close, BufferHoltMA, dummy_trend);
|
|
}
|
|
return(rates_total);
|
|
}
|
|
//+------------------------------------------------------------------+
|
|
//+------------------------------------------------------------------+
|