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Bill Whiten


Retired

29 total contributions since 2010

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Submitted


Equation selection using subset regression: regsubsets
Finds multiple linear regression equations relating measurement data to results. See regtest.html

22 days ago | 8 downloads |

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Submitted


Weighted median (from data & sds) & its standard deviation
Interpolated weighted median with calculation of its standard deviation and distribution

1 month ago | 2 downloads |

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Submitted


Optional function arguments
Optional function arguments with default values: optndfts

3 months ago | 2 downloads |

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Submitted


renamefields: Rename some field names in a struct
Changes struct field names from cell array list of old names to names in list of new names

3 months ago | 2 downloads |

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Submitted


selectfields: Select specified field names from a struct
Selects fields listed in a cell array from a struct

3 months ago | 3 downloads |

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Submitted


Select points from graph: graphpoints
Get coordinates and indices of points from a graph [xx,yy,indx]=graphpoints(x,y)

1 year ago | 2 downloads |

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Submitted


Reconcile multiple examinations
Reconcile multiple examinations of multiple projects

1 year ago | 0 downloads |

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Submitted


EXPERT1
An easy to use deduction engine useful for small expert systems and embedding complex condition ...

1 year ago | 2 downloads |

Submitted


Boxplot: boxplotx without toolboxes
Boxplot: boxplotx Quartiles box, 1% whiskers, & outliers

1 year ago | 13 downloads |

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Submitted


Expert2 Propositional Logic
A deduction engine useful for small expert systems and complex condition statements.

2 years ago | 3 downloads |

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Responded


Re: Correction to error in lsqnonneg
Also see: File exchange 38003 nnls - Non negative least squares Regards

2 years ago | 1955 views

Submitted


nlsq & nnnlsq Least squares
Robust & non negative non linear least squares: nlsq & nnnlsq

2 years ago | 3 downloads |

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Solved


Find the sum of all the numbers of the input vector
Find the sum of all the numbers of the input vector x. Examples: Input x = [1 2 3 5] Output y is 11 Input x ...

2 years ago

Submitted


KS statistic.zip
Test multiple samples for same distribution - probKS

3 years ago | 4 downloads |

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Answered
How to change default path on startup for Mac?
You could try: http://www.mathworks.com/matlabcentral/fileexchange/39425-restore-project-status-for-selected-project Allows ...

3 years ago | 0

Submitted


nnls - Non negative least squares
nnls - Alternative to lsqnonneg: faster on large problems, improved convergence, optional restart

4 years ago | 11 downloads |

Submitted


Greyboxeval - Model quality evaluation
For models residues=model(data,parameters) with data sets at different experimental conditions

4 years ago | 1 download |

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Submitted


Greyboxbuild: complete a greybox model
Completes a model by relating model parameters to operating conditions using experimental data

4 years ago | 0 downloads |

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Submitted


linfitregsel - term selection in linear regression
Select terms in linear regression (equation fitting) using eigenvectors and term significance

4 years ago | 0 downloads |

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Answered
Least Squares Method- Νon linear to Linear
You can write the equation as f=(a/b)x-(1/b)fx and use linear regression for the coefficients (a/b) and (1/b). Convert these to ...

4 years ago | 0

Responded


Re: Intersection between two cones
The free parameter a moves the circle thus forming the cone. Eliminating a then gives the equation of the cone. You can generat...

4 years ago | 5872 views

Responded


Re: Intersection between two cones
if centre is x1,y1,z1 and radius r set d^2=x1^2+y1^2+z1^2 Cone is intersection of spheres a^2 (d^2+r^2)=x^2+y^2+z^2 and a^2 r^2...

4 years ago | 5872 views

Submitted


Restore project status for selected project
Restores search path and reopens editor files for selected folder/project during startup/restart

5 years ago | 1 download |

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Responded


Re: Non-Uniform Fast Fourier Transform
You could try it as a regression problem, regress against time transformed to sin and cos of the frequencies you are interested ...

6 years ago | 9401 views

Responded


Re: While loop fails
T=2; s=0.1; n=round(T/s) for i=1:n to=T*i/n; . . .

6 years ago | 5588 views

Responded


Re: How to solve nonlinear vector eqaution?
Choose values for x(1) then you have a quadratic for x(2) which is easily solved. You can then plot the ellipse.

6 years ago | 1759 views

Responded


Re: Correction to error in lsqnonneg

6 years ago | 1955 views

Posted


Correction to error in nlsqnonneg
lsqnonneg does not converge if result contains very small positive values: small positive values are rejected at line 162 but b...

6 years ago | 1955 views

Responded


Re: Getting the names of files open in the editor?
In 2010a +: Documented method (doc editorservices): allDocs = editorservices.getAll; savededit={allDocs.Filename};

7 years ago | 2097 views