MATLAB CURVE FITTING TOOLBOX - RELEASE NOTES Handbücher

Bedienungsanleitungen und Benutzerhandbücher für Software MATLAB CURVE FITTING TOOLBOX - RELEASE NOTES.
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Inhaltsverzeichnis

Curve Fitting

1

How to Contact The MathWorks:

2

Contents

3

Preface

10

Related Products

10

Using This Guide

11

Installation Information

13

Typographical Conventions

14

Getting Started with the

15

Curve Fitting Toolbox

15

Importing the Data

17

Create data set

18

Fitting the Data

19

Copy Fit

20

Determining the Best Fit

22

Tools->Axes Limit Control

24

Table of Fits

25

Saving the Fit Results

27

Analyzing the Fit

29

Saving the Analysis Results

30

Saving Your Work

31

Saving the Session

32

Generating an M-File

33

Importing, Viewing, and

35

Preprocessing Data

35

Importing Data Sets

36

Data Sets List

37

Data Import Process

38

Create data set button

39

Viewing Data

40

Viewing Data Numerically

42

Smoothing Data

43

Data sets

44

Data sets list

44

Smoothing method

44

Data Sets

45

Moving Average Filtering

46

Lowess Smoothing

50

Robust Smoothing Procedure

51

Robust Lowess Smoothing

52

Savitzky-Golay Filtering

53

Savitzky−Golay Smoothing

54

Example: Smoothing Data

55

View button

56

Saving the Results

58

Excluding and Sectioning Data

59

Exclusion Rule

60

Marking Outliers

61

Influential Data Points

63

Sectioning

64

Check to

66

Data points outside the

68

Individual data points

68

Viewing the Exclusion Rule

69

applied

72

Infs, NaNs, and outliers

74

The Fitting Process

78

2 Select an exclusion rule

79

4 Compare fits

79

5 Save the fit results

79

Normal Distribution

81

Zero Mean

81

Constant Variance

81

Linear Least Squares

82

Weighted Linear Least Squares

85

Robust Least Squares

87

Nonlinear Least Squares

90

Library Models

92

Gaussian

93

Polynomials

93

Power Series

94

Rationals

95

Sum of Sines

95

Custom Equations

96

Linear Equations

97

General Equations

98

Specifying Fit Options

99

3 Fitting Data

100

Fitting Method and Algorithm

100

Fit Convergence Criteria

100

Coefficient Parameters

101

Residuals

103

Fitting Data

104

Goodness of Fit Statistics

105

Results list box in the

106

Table of fits

106

Parametric Fitting

107

View->Confidence Level

110

View->Residuals menu item

113

Example: Rational Fit

117

Tools->Custom Equation

122

New Equation button

122

Example: Robust Fit

137

Nonparametric Fitting

144

Smoothing Spline

146

Apply button

149

Selected Bibliography

151

Function Reference

153

4 Function Reference

154

Functions – By Category

154

Postprocessing Data

155

General Purpose

155

Functions – Alphabetical List

156

Syntax cflibhelp

158

Arguments

158

Description

158

See Also cfit, fit, fittype

159

Syntax cftool

160

The Data GUI

162

The Fitting GUI

163

The Exclude GUI

164

The Plotting GUI

164

The Analysis GUI

165

Syntax ci = confint(fresult)

166

See Also fit

167

Syntax xds = datastats(xdata)

168

See Also cfit, fit, integrate

171

Syntax obj

172

See Also fit, fittype

177

Syntax opts = fitoptions

182

Additional Fit Options

184

4integrate

193

Plot the residuals

197

, plot (built-in), subplot

198

See Also confint, fit

201

Syntax set(opts)

202

See Also fitoptions, get

203

Syntax yy = smooth(ydata)

204

See Also fit, sort

208

Numerics

209

Infs, NaNs, and outliers 2-41

215





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