Constrained B-Splines (Sparse Matrix Based)
Internal COBS functions
Methods for COBS Objects
COnstrained B-Splines Nonparametric Regression Quantiles
Summary Methods for 'conreg' Objects
Convex / Concave Regression
Regression Quantile Smoothing Spline with Constraints
(Cubic) Interpolation Spline from "conreg"
COBS auxiliary for constructing pointwise constraint specifications
Plot Method for COBS Objects
Predict method for COBS Fits
Quantile B-Spline with Fixed Knots
Qualitatively Constrained (Regression) Smoothing Splines via Linear Programming and Sparse Matrices.
Useful links