Generate the spline basis matrix for non log-linear effect.

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`x` |
the predictor variable. |

`Spline` |
a character string specifying the type of spline basis. "b-spline" for B-spline basis, "tp-spline" for truncated power basis and "tpi-spline" for monotone (increasing) truncated power basis. |

`Knots` |
the internal breakpoints that define the spline used to estimate the NLL effect. By default there are none. |

`Degree` |
degree of splines which are considered. |

`Intercept` |
a logical value indicating whether intercept/first basis of spline should be considered. |

`Boundary.knots` |
range of variable which is analysed. |

`Keep.duplicates` |
Should duplicate interior knots be kept or removed. Defaults is |

`outer.ok` |
logical indicating how are managed |

`...` |
not used |

`NLL`

is based on package `orthogonalsplinebasis`

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