computeFeatures(I1, I2, I3):

Compute the features dependent on the right Cauchy-Green strain invariants. Note that the features only depend on I1 and I3.

Input Arguments

• I1 - 1st invariant

• I2 - 2nd invariant

• I3 - 3rd invariant

Output Arguments

• x - features

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getNumberOfFeatures():

Compute number of features.

Input Arguments

• none

Output Arguments

• features.shape[1] - number of features

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