Rank: 6650 based on downloads (last 30 days) and 0 files submitted

Richard Voigt

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Professional Interests:: medical signal processing/feature detection

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Updated		File	Tags	Downloads (last 30 days)	Comments	Rating
12 Feb 2007		2D Weighted Polynomial Fitting and Evaluation Two scripts: polyfitweighted2 fits 2D data with weights, and polyval2 evaluates the 2D polynomial Author: Salman Rogers	weighted, 2d, probability, statistics, polynomial, fitting evaluation	75	5	4.83333 4.8 \| 6 ratings

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Type	Description
File	Exponential fit, without start-guess

Files Matching Richard's Watch List					1 - 1 of 1
Updated		File	Tags	Downloads (last 30 days)	Comments	Rating
09 Jan 2009		Exponential fit, without start-guess Fits 1) f=s1+s2exp(-t/s3) or 2) f=s1+s2exp(-t/s3)+s4*exp(-t/s5) to numerics, without startguess Author: Per Sundqvist	exponential, nonlinear, noise, fit, least square, exact	99	8	3.4 3.4 \| 6 ratings

Comments and Ratings Matching Richard's Watch List			1-5 of 8
Date	File	Comment by	Comments	Rating
15 Jun 2009	Exponential fit, without start-guess Fits 1) f=s1+s2exp(-t/s3) or 2) f=s1+s2exp(-t/s3)+s4*exp(-t/s5) to numerics, without startguess	Nitipat Pholchai	Works fine. Can you also please include any reference for the theory/method you used in this code? that should be helpful for any practitioner.	4
23 Mar 2009	Exponential fit, without start-guess Fits 1) f=s1+s2exp(-t/s3) or 2) f=s1+s2exp(-t/s3)+s4*exp(-t/s5) to numerics, without startguess	Gavrilo Bozovic	The intent is good, but the code is very messy, which made that, after getting initially bad results, I didn't even try to check where the error came from.	2
18 Mar 2009	Exponential fit, without start-guess Fits 1) f=s1+s2exp(-t/s3) or 2) f=s1+s2exp(-t/s3)+s4*exp(-t/s5) to numerics, without startguess	Bass	Works fine for the simple fits I have tried. It would be great if it had confidence intervals on fit values	4
18 Mar 2009	Exponential fit, without start-guess Fits 1) f=s1+s2exp(-t/s3) or 2) f=s1+s2exp(-t/s3)+s4*exp(-t/s5) to numerics, without startguess	Bass	Works fine for the simple fits I have tried	5
17 Mar 2009	Exponential fit, without start-guess Fits 1) f=s1+s2exp(-t/s3) or 2) f=s1+s2exp(-t/s3)+s4*exp(-t/s5) to numerics, without startguess	Long Zhao	It really helps a lot. However, what if I want to set the condition that the parameters s(i)>0? Look, t1={384,1186,1471,2236,2772,2967,3812,4880,6104} and y1={13,18,26,34,40,48,61,75,84}, I got that S(i) are a+bi like stuff, what I really want to get is the real number. Again, t2={254,788,1054,1393,2216,2880,3593,4281,5180} and y2={1,3,8,9,11,16,19,25,27}, then S(5)<0 rather than the positive I want to obtain.	5

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