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mql5/Indicators/MyIndicators/Quant/LinReg_Slope_MTF_Pro.mq5
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//+------------------------------------------------------------------+
//| LinReg_Slope_MTF_Pro.mq5 |
//| Copyright 2026, xxxxxxxx|
//+------------------------------------------------------------------+
#property copyright "Copyright 2026, xxxxxxxx"
#property version "1.10" // Upgraded with dynamic 5-Zone hybrid R2-based thermal color matrix (Standard aligned)
#property description "Multi-Timeframe (MTF) Linear Regression Slope."
#property description "Displays HTF Linear Regression Slope on current chart cleanly without live-bar warping."
#property indicator_separate_window
#property indicator_buffers 2
#property indicator_plots 1
//--- Plot 1: Slope Histogram (Swapped Bull/Bear Thermal Palette)
#property indicator_label1 "Slope MTF"
#property indicator_type1 DRAW_COLOR_HISTOGRAM
// Colors:
// 0 = Chop/Noise (Gray)
// 1 = Bull Climax / Strong (MediumSeaGreen)
// 2 = Bull Flow / Weak (PaleGreen)
// 3 = Bear Climax / Strong (Crimson)
// 4 = Bear Flow / Weak (LightCoral)
#property indicator_color1 clrGray, clrMediumSeaGreen, clrPaleGreen, clrCrimson, clrLightCoral
#property indicator_style1 STYLE_SOLID
#property indicator_width1 2
#include <MyIncludes\LinearRegression_Calculator.mqh>
enum ENUM_CANDLE_SOURCE
{
SOURCE_STANDARD,
SOURCE_HEIKIN_ASHI
};
//--- Input Parameters ---
input group "Timeframe Settings"
input ENUM_TIMEFRAMES InpTimeframe = PERIOD_H1; // Target Higher Timeframe
input group "Slope Settings"
input int InpPeriod = 20; // Observation Period (N)
input ENUM_CANDLE_SOURCE InpSource = SOURCE_STANDARD; // Candle Source
input ENUM_APPLIED_PRICE InpPrice = PRICE_CLOSE; // Applied Price (Standard)
input double InpTrendLevel = 0.7; // Strong Trend Level (R2 Threshold)
//--- Buffers
double BufferSlope_MTF[];
double BufferColors_MTF[];
//--- Internal HTF Data Caches
double h_res_slope[]; // HTF Slope Results cached
double h_res_r2[]; // HTF R2 Results cached
double h_res_f[]; // HTF Forecast Results cached
datetime h_time[]; // HTF Time index
double h_open[], h_high[], h_low[], h_close[]; // HTF Price Data
//--- Global variables ---
CLinearRegressionCalculator *g_calculator;
bool g_is_mtf_mode = false;
ENUM_TIMEFRAMES g_calc_timeframe;
bool g_data_ready = false;
bool g_data_synced = false;
int g_htf_count = 0;
datetime g_last_htf_time = 0;
//+------------------------------------------------------------------+
//| EnsureHTFDataReady |
//+------------------------------------------------------------------+
bool EnsureHTFDataReady(const string symbol, const ENUM_TIMEFRAMES timeframe, const int required_bars)
{
ResetLastError();
if(!SymbolInfoInteger(symbol, SYMBOL_SELECT))
{
SymbolSelect(symbol, true);
}
datetime times[];
int copied = CopyTime(symbol, timeframe, 0, required_bars, times);
return (copied >= required_bars);
}
//+------------------------------------------------------------------+
//| OnInit |
//+------------------------------------------------------------------+
int OnInit()
{
g_data_ready = false;
g_data_synced = false;
g_htf_count = 0;
g_last_htf_time = 0;
//--- 1. Resolve Timeframe
g_calc_timeframe = InpTimeframe;
if(g_calc_timeframe == PERIOD_CURRENT)
g_calc_timeframe = (ENUM_TIMEFRAMES)Period();
if(g_calc_timeframe < Period())
{
PrintFormat("Error: Target timeframe (%s) must be >= current timeframe (%s).",
EnumToString(g_calc_timeframe), EnumToString(Period()));
return(INIT_FAILED);
}
g_is_mtf_mode = (g_calc_timeframe > Period());
//--- 2. Setup Buffers
SetIndexBuffer(0, BufferSlope_MTF, INDICATOR_DATA);
SetIndexBuffer(1, BufferColors_MTF, INDICATOR_COLOR_INDEX);
ArraySetAsSeries(BufferSlope_MTF, false);
ArraySetAsSeries(BufferColors_MTF, false);
PlotIndexSetDouble(0, PLOT_EMPTY_VALUE, EMPTY_VALUE);
//--- 3. Initialize Calculator (Factory Logic)
bool use_ha = (InpSource == SOURCE_HEIKIN_ASHI);
if(use_ha)
g_calculator = new CLinearRegressionCalculator_HA();
else
g_calculator = new CLinearRegressionCalculator();
if(CheckPointer(g_calculator) == POINTER_INVALID || !g_calculator.Init(InpPeriod))
{
Print("Failed to create or initialize Linear Regression Calculator object.");
return(INIT_FAILED);
}
//--- 4. Set Shortname
string type = use_ha ? " HA" : "";
string tf_str = g_is_mtf_mode ? (" " + EnumToString(g_calc_timeframe)) : "";
IndicatorSetString(INDICATOR_SHORTNAME, StringFormat("LinReg Slope%s%s(%d)", type, tf_str, InpPeriod));
// Draw begin logic
int draw_begin = InpPeriod;
if(g_is_mtf_mode)
draw_begin = 0;
PlotIndexSetInteger(0, PLOT_DRAW_BEGIN, draw_begin);
//--- Set dynamic decimal digits to match symbol precision + 2 (EURUSD = 7 digits) to show micro-pip details
IndicatorSetInteger(INDICATOR_DIGITS, _Digits + 2);
//--- Initialize 1-second timer for weekend/async chart refreshes (Only if MTF mode is active)
if(g_is_mtf_mode)
EventSetTimer(1);
return(INIT_SUCCEEDED);
}
//+------------------------------------------------------------------+
//| OnDeinit |
//+------------------------------------------------------------------+
void OnDeinit(const int reason)
{
EventKillTimer();
if(CheckPointer(g_calculator) != POINTER_INVALID)
delete g_calculator;
}
//+------------------------------------------------------------------+
//| OnCalculate |
//+------------------------------------------------------------------+
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(rates_total < 2)
return(0);
if(CheckPointer(g_calculator) == POINTER_INVALID)
return(0);
//--- Force strict chronological indexing for state-safety on input price arrays
ArraySetAsSeries(time, false);
ArraySetAsSeries(open, false);
ArraySetAsSeries(high, false);
ArraySetAsSeries(low, false);
ArraySetAsSeries(close, false);
ENUM_APPLIED_PRICE price_type = (InpSource == SOURCE_HEIKIN_ASHI) ?
(ENUM_APPLIED_PRICE)(-(int)InpSource) :
(ENUM_APPLIED_PRICE)InpSource;
//================================================================
// MODE 1: Current Timeframe (Standard)
//================================================================
if(!g_is_mtf_mode)
{
double s[], r2[], f[];
ArrayResize(s, rates_total);
ArrayResize(r2, rates_total);
ArrayResize(f, rates_total);
g_calculator.CalculateState(rates_total, prev_calculated, open, high, low, close, InpPrice, s, r2, f);
int start_index = (prev_calculated > 0) ? prev_calculated - 1 : InpPeriod;
for(int i = start_index; i < rates_total; i++)
{
double r = r2[i];
double sl = s[i];
BufferSlope_MTF[i] = sl;
if(r <= 0.3)
{
BufferColors_MTF[i] = 0.0; // Gray
}
else
if(sl >= 0.0)
{
if(r >= InpTrendLevel)
BufferColors_MTF[i] = 1.0; // Strong Bullish
else
BufferColors_MTF[i] = 2.0; // Weak Bullish
}
else // sl < 0.0
{
if(r >= InpTrendLevel)
BufferColors_MTF[i] = 3.0; // Strong Bearish
else
BufferColors_MTF[i] = 4.0; // Weak Bearish
}
}
return(rates_total);
}
//================================================================
// MODE 2: Multi-Timeframe (MTF Engine)
//================================================================
//--- Ensure target timeframe history is ready
int required_bars = InpPeriod + 10;
if(!EnsureHTFDataReady(_Symbol, g_calc_timeframe, required_bars))
{
g_data_synced = false;
return 0; // Wait for next tick to let history load
}
g_data_synced = true;
//--- 1. Check if a new HTF bar has formed
datetime htf_time_current = iTime(_Symbol, g_calc_timeframe, 0);
bool htf_updated = (htf_time_current != g_last_htf_time);
if(htf_updated || prev_calculated == 0)
{
g_last_htf_time = htf_time_current;
int htf_bars = iBars(_Symbol, g_calc_timeframe);
if(htf_bars < required_bars)
{
g_data_ready = false;
return 0;
}
g_htf_count = MathMin(htf_bars, 3000);
ArrayResize(h_time, g_htf_count);
ArrayResize(h_open, g_htf_count);
ArrayResize(h_high, g_htf_count);
ArrayResize(h_low, g_htf_count);
ArrayResize(h_close, g_htf_count);
ArrayResize(h_res_slope, g_htf_count);
ArrayResize(h_res_r2, g_htf_count);
ArrayResize(h_res_f, g_htf_count);
// Force chronological array alignment on HTF caches after resize
ArraySetAsSeries(h_time, false);
ArraySetAsSeries(h_open, false);
ArraySetAsSeries(h_high, false);
ArraySetAsSeries(h_low, false);
ArraySetAsSeries(h_close, false);
if(CopyTime(_Symbol, g_calc_timeframe, 0, g_htf_count, h_time) != g_htf_count ||
CopyOpen(_Symbol, g_calc_timeframe, 0, g_htf_count, h_open) != g_htf_count ||
CopyHigh(_Symbol, g_calc_timeframe, 0, g_htf_count, h_high) != g_htf_count ||
CopyLow(_Symbol, g_calc_timeframe, 0, g_htf_count, h_low) != g_htf_count ||
CopyClose(_Symbol, g_calc_timeframe, 0, g_htf_count, h_close) != g_htf_count)
{
g_data_ready = false;
return 0;
}
//--- Calculate Slope states on HTF (Closed bars and forming bar initialized)
g_calculator.CalculateState(g_htf_count, 0, h_open, h_high, h_low, h_close, InpPrice, h_res_slope, h_res_r2, h_res_f);
g_data_ready = true;
}
if(!g_data_ready)
return 0;
//--- 2. Live Update for the Current Forming HTF Bar (Index: g_htf_count - 1) on every tick!
int live_idx = g_htf_count - 1;
if(live_idx >= InpPeriod)
{
double o[1], h[1], l[1], c[1];
int shift = iBarShift(_Symbol, g_calc_timeframe, htf_time_current, false);
if(shift >= 0 &&
CopyOpen(_Symbol, g_calc_timeframe, shift, 1, o) == 1 &&
CopyHigh(_Symbol, g_calc_timeframe, shift, 1, h) == 1 &&
CopyLow(_Symbol, g_calc_timeframe, shift, 1, l) == 1 &&
CopyClose(_Symbol, g_calc_timeframe, shift, 1, c) == 1)
{
h_open[live_idx] = o[0];
h_high[live_idx] = h[0];
h_low[live_idx] = l[0];
h_close[live_idx] = c[0];
// Incremental recalculation on the live HTF index in O(1)
// Passed g_htf_count as prev_calculated to preserve state safety
g_calculator.CalculateState(g_htf_count, g_htf_count, h_open, h_high, h_low, h_close, InpPrice, h_res_slope, h_res_r2, h_res_f);
}
}
//--- 3. FIXED: Dynamically adjust 'start' to the beginning of the current forming HTF bar
int start = (prev_calculated > 0) ? prev_calculated - 1 : 0;
int first_bar_of_forming_htf = rates_total - 1;
while(first_bar_of_forming_htf > 0 &&
iBarShift(_Symbol, g_calc_timeframe, time[first_bar_of_forming_htf], false) == 0)
{
first_bar_of_forming_htf--;
}
first_bar_of_forming_htf++; // This is the start of the forming step on lower TF chart
if(start > first_bar_of_forming_htf)
start = first_bar_of_forming_htf;
//--- 4. Incremental Mapping of HTF results to Current Chart Timeframe (O(1) per tick)
for(int i = start; i < rates_total; i++)
{
datetime t = time[i];
int shift_htf = iBarShift(_Symbol, g_calc_timeframe, t, false);
if(shift_htf >= 0)
{
int idx_htf = g_htf_count - 1 - shift_htf;
if(idx_htf >= 0 && idx_htf < g_htf_count)
{
double r2 = h_res_r2[idx_htf];
double sl = h_res_slope[idx_htf];
BufferSlope_MTF[i] = sl;
// Color Logic based on HTF direction and HTF R2 strength
if(r2 <= 0.3)
{
BufferColors_MTF[i] = 0.0; // Index 0: Gray (Chop)
}
else
if(sl >= 0.0)
{
if(r2 >= InpTrendLevel)
BufferColors_MTF[i] = 1.0; // Index 1: MediumSeaGreen (Strong Bull)
else
BufferColors_MTF[i] = 2.0; // Index 2: PaleGreen (Weak Bull)
}
else
{
if(r2 >= InpTrendLevel)
BufferColors_MTF[i] = 3.0; // Index 3: Crimson (Strong Bear)
else
BufferColors_MTF[i] = 4.0; // Index 4: LightCoral (Weak Bear)
}
}
else
{
BufferSlope_MTF[i] = EMPTY_VALUE;
BufferColors_MTF[i] = 0.0;
}
}
else
{
BufferSlope_MTF[i] = EMPTY_VALUE;
BufferColors_MTF[i] = 0.0;
}
}
return(rates_total);
}
//+------------------------------------------------------------------+
//| OnTimer |
//| Handles loading checks and force-redraws |
//+------------------------------------------------------------------+
void OnTimer()
{
if(!g_data_synced)
{
int required_bars = InpPeriod + 5;
if(EnsureHTFDataReady(_Symbol, g_calc_timeframe, required_bars))
{
g_data_synced = true;
ChartRedraw(); // Force MT5 to invoke OnCalculate
}
}
}
//+------------------------------------------------------------------+
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