zerobasis | R Documentation |
The matrix is k by k-1, columns are orthonormal and sum to zero. This matrix is used when quantities are unchanged to adding a constant, such as in multinomial data modelling.
zerobasis(k)
k |
A positive integer greater than one. |
There are many ways of generating these matrix. This functions uses the discrete Fourier series less the constant vector.
A k
by k-1
matrix with orthonormal columns that sum to zero.
smooth.surp
,
eval.surp
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