Description Usage Arguments Value
Calculates and returns a new designer matrix, representing the correspondieng PWP expansion for all d variables. Combines all the parameters on a relatively fast computation of basis expansion for X described on the thesis and on (Denison, Mallik and Smith, 1998).
1 | calculate_Psi(X, M, J, K, n, d, tau)
|
X |
Design matrix of n observations and d covariables (numeric - n*d) |
M |
M minus 1 is the degree of the polinomial (integer - M > 0) |
J |
Number of intervals in each dimention (integer - J > 1) |
K |
Order of continuity in the derivatives (integrer - 0 < K < M) |
tau |
A desginer matrix containing the PWP expansion described in (...)
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