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# Lennart

7 total contributions since 2013

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Question

Why does lsqcurvefit to function with if statement take many iterations to converge and stays close to starting values?
Ive got this data I want to fit a function to: <</matlabcentral/answers/uploaded_files/5624/waveform.bmp>> The y axis mean...

6 years ago | 2 answers | 0

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Question

Sort multidimensional array along one dimension
I have a [80 80 3 646 2] sized array of measurements which represent [80 80 3] points each with its 646 values at [: : : : 1] an...

6 years ago | 1 answer | 0

### 1

Question

Printmat still usable and if so, what am I doing wrong
So Ive got this matrix, and would like it to be printed with labels and my colleagues use the function printmat. However I keep ...

6 years ago | 2 answers | 0

### 2

Question

MatLab maxes out exactly one of my cores.
I am doing a lot of lsqcurvefits (order of 10^9 datapoints about 20 per fit so thats 10^8 fits) and all data is loaded in memory...

6 years ago | 1 answer | 0

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Question

All input options for fft so I can correctly do fft with respect to a single dimension in multidimensional array.
So I have a array A with dimensions [x y z t] of size [64 64 64 19] and I want to take the fft for every [x y z] position with r...

6 years ago | 1 answer | 0

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Speed up (vectorize?) nlinfit
Hi Loannis, I have found <http://www.mathworks.com/matlabcentral/fileexchange/40613-multiple-curve-fitting-with-common-parameter...

6 years ago | 0

Question

How to slice inside GUI without error feval(varargin{:})
So I am making a GUI using GUIDE. The first step I want to make is to reduce my 11D array dataset to a 3D array. This is no prob...

6 years ago | 2 answers | 0