Compare error plot in command line for system id toolbox model/data object

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Jackie Lee
Jackie Lee 2012-3-15
Hi All,
I am using system id toolbox and I am trying to reproduce the "Error Plot" using the command line. Here is my code. I would appreciate better way to do this.
error = Validation.y - ypred % Validaton is iddata obj used in system id GUI
ypred = sim(idpoly_model,Validation.u) % model is in idpoly obj.
For ypred, I do not know how to set initial conditions so that the "error" would look similar to what I have in the System Id GUI
Thanks a lot!
Carfield

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回答（1 个）

Rajiv Singh
Rajiv Singh 2012-3-17
Have you looked at RESID and PE routines? PE calculates prediction errors and allows specification of initial conditions.

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