Spline Toolbox

Preface

Using This Guide

Organization of the Document

Related Products

Typographical Conventions

Introduction

What Is the Spline Toolbox?

New Features in Version 3.1.1

Smoothing Splines for Scattered Bivariate Data

splinetool Command History/M-File

Spline-Specific Zero Finder

Spline-Specific Minimum Finder

Other Enhancements

Splines in MATLAB

Expected Background

Technical Conventions

Tutorial

Some Simple Examples

Cubic Spline Interpolation

Periodic Data

Other End Conditions

General Spline Interpolation

Knot Choices

Smoothing

Least Squares

Using the Spline Fits

Vector-Valued Functions

Fitting Values at N-D Grid

Fitting Values at Scattered 2-D Sites

Splines: An Overview

Polynomials vs. Splines

ppform

B-form

Knot Multiplicity

B-Spline Properties

Constructive vs. Variational

Multivariate Splines

The ppform

Breaks

ppform

Construction

Use

The B-form

B-form

B-Splines

Knot Multiplicity

Choice of Knots

Splines

Construction

Example: A Spline Curve

Use

Tensor Product Splines

B-form

ppform

NURBS and Other Rational Splines

Rational Splines

Example: Circle

Example: Sphere

rsform

Use

The stform

stform

Use

Example: A Nonlinear ODE

Problem

Approximation Space

Discretization

Numerical Problem

Linearization

Linear System to Be Solved

Iteration

Example: Construction of the Chebyshev Spline

What Is a Chebyshev Spline?

Choice of Spline Space

Initial Guess

Remez Iteration

Example: Approximation by Tensor Product Splines

Choice of Sites and Knots

Least Squares Approximation as Function of y

Approximation to Coefficients as Functions of x

Switch in Order

Approximation to Coefficients as Functions of y

The Bivariate Approximation

Comparison and Extension

Reference

Functions - By Category

GUIs

Construction of Splines

Operators

Work with Breaks, Knots, and Sites

Customized Linear Equation Solver

Information About Splines and the Toolbox

Demonstrations

Utilities

Functions - Alphabetical List

Glossary

Introduction

List of Terms

Intervals

Vectors

Functions

Placeholder notation

Curves and surfaces vs. functions

Tensor products

Polynomials

Piecewise-polynomials

B-splines

Splines

Rational splines

Thin-plate splines

Interpolation

Schoenberg-Whitney Theorem

Least-squares approximation

Smoothing

Index


 Preface