Collect information to smooth the term in its argument. Used in the model formula.
g(var, df = NULL)List containing the same elements of its argument.
variable to be smoothed
equivalent degrees of freedom to be passed to the smoother. If NULL, smoothing parameter is selected by cross-validation
Washington Leite Junger wjunger@ims.uerj.br
This function only sets things up for model fitting. The smooth terms are actually fitted by bkfsmooth.
Green, P. J., Silverman, B. W. (1994) Nonparametric Regression and Generalized Linear Models: a roughness penalty approach. Chapman and Hall, London
Hastie, T. J., Tibshirani, R. J.(1990) Generalized Additive Models. Chapman and Hall, London
Junger, W. L. (2004) Semiparametric Poisson-Gamma models: a roughness penalty approach. MSc Dissertation. Rio de Janeiro, PUC-Rio, Department of Electrical Engineering.
pgam, formparser