https://it.mathworks.com/help/econ/presample-data-for-arima-estimation.html
Presample Data for Conditional Mean Model Estimation - MATLAB & Simulink
Specify presample data to initialize the model.
dataconditionalmeanmodelestimation
https://se.mathworks.com/help/econ/presample-data-for-conditional-variance-estimation.html
Presample Data for Conditional Variance Model Estimation - MATLAB & Simulink
Specify presample data to initialize the model.
dataconditionalvariancemodelestimation
https://www.mathworks.com/help/econ/specify-presample-and-forecast-period-data-to-forecast-arimax-model.html
Specify Presample and Forecast Period Data to Forecast ARIMAX Model - MATLAB & Simulink
This example shows how to partition a timeline into presample, estimation, and forecast periods, and it shows how to supply the appropriate number of...
specifyforecastperiod
https://se.mathworks.com/help/econ/presample-data-for-conditional-variance-model-simulation.html
Presample Data for Conditional Variance Model Simulation - MATLAB & Simulink
Learn about presample requirements for simulation.
dataconditionalvariancemodelsimulation