Extrapolator MetaTrader 4 Forex Indicator

is created on a few methods that can be chosen by the Method input variable:

Method 1: Fourier's extrapolation; the frequencies are calculated using the Quinn-Fernandes Algorithm

Method 2: Auto correlation Method

Method 3: Weighted Burg Method

Method 4: Burg Method with Helme-Nikias weighting function

Method 5: Itakura-Saito (geometric) method

Method 6: Modified covariance method

Methods 2-6 are the methods of linear prediction. The linear prediction is created on finding the future costs as the linear functions of the past values. Presume that we have a number of prices x[0]..x[n-1] where the higher index is compliant with the recent price. The prediction of the future price x[n] is calculated as

x[n] = -Sum(a[i]*x[n-i], i=1..p)

where a[i=1..p] - coefficients of the model, p - order of the model. The listed methods 2-6 find the coefficients a[] by decreasing the mean-root-square error on the training last n-p bars. Of course, we can reach the zero error of prediction if we directly solve the set of equations mentioned above with n=2*p by the Levinson-Durbin method. Such method of prediction is called Prony Method. Its disadvantage is the instability during the prediction of the future values of the series. That's why this method has not been included.

The other input parameters are:

LastBar - the number of the last bar in the past data

PastBars - the number of past bars used for the prediction of the future values

LPOrder - the order of the linear model as a fraction from the number of the past bars (0..1)

FutBars - the number of future bars in the prediction

HarmNo - the maximum number of frequencies for the Method 1 (0 means all frequencies)

FreqTOL - the imprecision of the frequeincies calculation for the Method 1 (if it is >0.001 it can't converge)

BurgWin - the number of the weighting function for the Method 2 (0=Rectangular 1=Hamming 2=Parabolic)

The indicator shows two lines: the blue line draws the prices of the model on the training bars, the red line draws the predicted future prices.

**Examples:**

Method 1 (the extrapolation of Fourier series)

Method 3 (Burg's method)

Method 6 (Modified Covariance Method)

**Extrapolator MT4 Indicator – Download Instructions**

In order to transform accumulated history data, you need to install a MetaTrader 4

Extrapolator - it is a MetaTrader 4 indicator that allows you to detect several changes and dynamics in price that many traders can’t estimate or see without an indicator, which highlights its essence and usage.

Accordingly, traders can draw conclusions and make estimates about how the prices will change based on the information they have and then they can modify their strategy for better trading.

**How to install Extrapolator indicator for MetaTrader 4.mq4?**

Download indicator for MetaTrader 4.mq4

Copy Extrapolator to Directory / experts / indicators /

Start or restart your Metatrader 4 Client

Select Chart and Timeframe where you want to test your mt5 indicator

Search “Custom Indicators” in your Navigator mostly left in your Metatrader 4 Client

Right click on MT4 indicator for MetaTrader 4.mq4

Attach to a chart

Modify settings or press ok

now indicator for MetaTrader 4.mq4 is available on your Chart

**How to remove** **MT4 ****Indicator for MetaTrader 4.mq4 from your Metatrader 4 Chart?**

Select the Chart where is the Indicator running in your Metatrader 4 Client

Right click into the Chart

“Indicators list”

Select the Indicator and delete.

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