These two functions are similar to the poly and polym in R.
Are needed for the gamlss.lo function of GAMLSS and should not be used on their own.
polyS(x, ...)
poly.matrix(m, degree = 1)a variable
a variable
the degree of the polynomial
for extra arguments
Returns a matrix of orthogonal polynomials
Not be use by the user
Rigby, R. A. and Stasinopoulos D. M. (2005). Generalized additive models for location, scale and shape,(with discussion), Appl. Statist., 54, part 3, pp 507-554. Stasinopoulos D. M., Rigby R.A., Heller G., Voudouris V., and De Bastiani F., (2017) Flexible Regression and Smoothing: Using GAMLSS in R, Chapman and Hall/CRC.
(see also http://www.gamlss.org/).
Stasinopoulos D. M. Rigby R.A. (2007) Generalized additive models for location scale and shape (GAMLSS) in R. Journal of Statistical Software, Vol. 23, Issue 7, Dec 2007, http://www.jstatsoft.org/v23/i07.