Great Surfing Indicator - Complete Explanation

Overview

The Great Surfing indicator is an advanced trend-following oscillator that combines digital signal processing (DSP) techniques with price action analysis. This unique indicator helps traders identify trend direction, momentum shifts, and potential reversal points with high accuracy.

Key Features & Benefits

1. Dual Signal System

Main DSP Line: Calculates a smoothed price difference (14-period default)

Signal Line: 9-period EMA of the DSP line (adjustable)

2. Multiple Price Input Options

25 different price calculation methods including:

Standard prices (open, high, low, close)

Median/typical/weighted prices

Heiken Ashi variants

Trend-biased price calculations

4 Color Modes for Visual Clarity

mql4

enum enColorOn {

   chg_onZero,   // Changes color on zero line cross

   chg_onOuter,  // Changes when crossing signal bands

   chg_onOuter2, // Changes on opposite band cross

   chg_onSlope   // Changes on slope direction

};

Unique Advantages Over Traditional Indicators

FeatureGreat SurfingTraditional MACD

Price Options25 different inputsOnly close price

Signal Customization4 color modesFixed coloring

Trend SensitivityAdjustable DSP periodFixed calculations

Visual ClarityHistogram shows highs/lowsStandard histogram

How It Works

Core Calculation

The indicator uses a sophisticated dual EMA system:

Main DSP Line:

mql4

val[i] = EMA(price, alpham) - EMA(price, alpham/2.0)

Where alpham = 2/(1+DspPeriod)

Signal Lines:

mql4

levelu[i] = EMA of positive val values

leveld[i] = EMA of negative val values

Signal Generation Logic

The indicator plots:

Lime Green Histogram (bullish) when:

state[i] == 1 (based on selected color mode)

Shows current high/low as histogram bars

Orange-Red Histogram (bearish) when:

state[i] == -1

Inverts high/low display

Trading Applications

1. Trend Identification

Strong Uptrend: Consistent lime histogram with highs above lows

Strong Downtrend: Consistent orange histogram with lows above highs

Trend Reversal: Color change + histogram flip

2. Entry/Exit Signals

Best Settings for Day Trading

DspPeriod = 8, SignalPeriod = 5 (more sensitive)

Use pr_medianb price for smoother signals

ColorOn = chg_onOuter2 for confirmed signals

Swing Trading Configuration

DspPeriod = 21, SignalPeriod = 13

Use pr_hatypical for cleaner trends

ColorOn = chg_onSlope for early detection

3. Special Features

Heiken Ashi Mode: Perfect for filtering noise in choppy markets

Trend-Biased Prices: Excellent for momentum trading

Customizable Sensitivity: Adjust periods for any trading style

Why Traders Love This Indicator

Unmatched Versatility: 25 price inputs suit all strategies

Clear Visual Signals: Color changes make trends obvious

Reduced False Signals: Dual EMA system filters noise

Customizable Alerts: Can be set for any color change mode

Multi-Timeframe Friendly: Works on all charts from M1 to MN

Pro Tips for Best Results

Combine with Support/Resistance:

Only take signals at key price levels

Use as Confirmation:

Wait for histogram flip after price pattern forms

Session Trading:

Great for catching London/New York opens

Position Sizing:

Larger positions when both DSP and signal lines agree

Conclusion

The Great Surfing indicator stands out because it:

✅ Adapts to any market condition

✅ Provides earlier signals than most oscillators

✅ Works across all instruments and timeframes

✅ Offers unmatched customization