Based on package AdaptFit, fits semiparametric regression models with spatially adaptive penalized splines and computes simultaneous confidence bands. Particular differences to AdaptFit include the availability of simultaneous confidence bands and B-spline basis functions and different functionality of the plot function. However, random effects, autocorrelations and interaction surfaces are not supported. Further, only Gaussian responses are supported. Note that in contrast to AdaptFit, estimated curves are centered to have zero mean and dummies for categorical covariates are constructed automatically if a variable is given as factor. For computation of the critical value for simultaneous confidence bands based on Hotelling's volume-of-tube formula, some functions of the libtube library by Catherine Loader (see package locfit) are used. See the references for details on the construction of the confidence bands.
asp2
(Package: AdaptFitOS) :
Fit a semiparametric regression model with spatially adaptive penalized splines
Fits semiparametric regression models using the mixed model representation of penalized splines with spatially adaptive penalties based on the asp function from package AdaptFit. Particular differences to AdaptFit include the availability of simultaneous confidence bands and B-spline basis functions and different functionality of the plot function. However, random effects, autocorrelations and interaction surfaces are not supported. Further, only Gaussian responses are supported. Note that in contrast to AdaptFit, estimated curves are centered to have zero mean.
providing 
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