contr.helmod: Modified Helmert Contrast Matrix
In kergp: Gaussian Process Laboratory

Modified Helmert contrast (or coding) matrix.

1	contr.helmod(n)

n

Integer.

The returned matrix is a scaled version of contr.helmert(A).

An orthogonal matrix with n rows and n - 1 columns. The columns form a basis of the subspace orthogonal to a vector of n ones.

1 2	A <- contr.helmod(6) crossprod(A)

kergp documentation built on March 18, 2021, 5:06 p.m.

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