Karl
University of Toronto
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Question
Multivariate optimization subject to strange restraint
Hello, I have a multivariate optimization problem with, with what I think is a strange restraint. Essentially I have a function ...
plus de 10 ans il y a | 1 réponse | 0
1
réponseQuestion
Real time reading in a file
Hello. I want to write a function which continually reads in a file until some stopping criteria is met. I would like it to read...
presque 11 ans il y a | 1 réponse | 0
0
réponseQuestion
Confidence intervals from fit
Hi, I'm currently trying to fit my data to the model y = a*(1-exp(x/b)), and extract the two constants a and b. I'm currently us...
environ 11 ans il y a | 1 réponse | 0
0
réponseQuestion
Calculating the error on a non-linear least squares fit
Hi, so I'm currently running a program which fits some noisy data to a monoexponential function using a non-linear least squares...
plus de 11 ans il y a | 1 réponse | 0
0
réponseQuestion
Which statistical test to use?
Hi, I have a quick question. Basically I have measured a set of quantities in two different ways (way A and way B), and have als...
environ 12 ans il y a | 1 réponse | 0
0
réponseQuestion
How to access ALL information of dicom header?
Hi, I have a dicom image from a GE MRI scanner and I was wondering how I can access all the information stored in the header? I ...
plus de 12 ans il y a | 1 réponse | 0
0
réponseQuestion
Adding a line to a scatter plot
Hi, I have an old plot which I used 'scatter(x,y)' to generate. I would now, however, like to add in a line (i.e., connect the p...
plus de 13 ans il y a | 1 réponse | 0
1
réponseQuestion
PCG and MINRES question
Hi, I have a problem which PCG and minres seem to be built to handle, i.e. I have A(x) = b, Where A is a function I've wr...
environ 14 ans il y a | 2 réponses | 0
2
réponsesLeast squares problem with large matrix
I should mention that I've tried some of MATLAB's built in iterative LSQ methods, such as pcg, and they did not converge. If som...
environ 14 ans il y a | 0
Question
Least squares problem with large matrix
Hi, I have a simple matrix problem which I believe can be solved in two steps, Ultimately I am looking for a least squares so...
environ 14 ans il y a | 2 réponses | 0
2
réponsesQuestion
A difficult multi-curve fitting problem
Hi, I have a question. Say I had a matrix (of, lets say nxm size, where n and m are ~= 1000). In this matrix there is the inform...
environ 14 ans il y a | 1 réponse | 0
0
réponseQuestion
Hexagonal Pixel Image
Hi! I've been working on developping an imaging system and currently I use a square matrix (so I can simply display my image via...
plus de 14 ans il y a | 1 réponse | 0
