Jacobian

Calculate Jacobian matrix for model at existing or new data points

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    Syntax

    J = Jacobian(model,x)

    Description

    J = Jacobian(model,x) calculates the Jacobian matrix for the model at existing or new data points x. If x is not specified then the existing data is used.

    Input Arguments

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    Model whose Jacobian matrix is being computed, specified as a mbcmodel.model object.

    New data points where the Jacobian of model is being computed, specified as a matrix.

    Output Arguments

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    Jacobian of the matrix at designated data points, returned as a matrix. The Jacobian matrix (for linear and RBF models) is the same as the Regression Matrix in the GUI. These matrices only include the terms currently selected in the model.

    If all terms are included (none removed by Stepwise) then the Jacobian (for linear and RBF models) is the same as the Full FX matrix found in the Design Evaluation Tool GUI. The Jacobian matrix only includes the currently selected model terms.

    To determine the condition number, use the MATLAB® command cond(J).

    Version History

    Introduced before R2006a