Answered
POWER LAW FITMENT (POWER LAW WITH CUTOFF AND LOGNORMAL) IN CURVE FITTING TOOL
Hi, I'm doing the same. There is no such option. You need to visually split your frequency response and fit a power law to up...

meer dan 11 jaar ago | 0

Answered
curve fitting a power function
I have the same problem. This method of converting to logarithmic scale and then use polyfit to fit a linear curve to data gives...

meer dan 11 jaar ago | 0

Question

2D FFT of an image shows some invalid values for high frequencies
I uploaded my 2D FFT magnitude image here: <https://dl.dropboxusercontent.com/u/82779497/2D_FFT.png> If you take a look at...

meer dan 11 jaar ago | 2 answers | 0

Question

Set of parallel lines in a matrix along different directions(not x and y direction)
Dear all, I don't have an idea about how to proceed with this problem! Imagine, I have a 480x748 matrix; I need set of parall...

meer dan 11 jaar ago | 2 answers | 0

Question

lsqcurvefit does not fit correctly to my data
Dear all, I want to fit a nonlinear function to my data, and here is the code I have so far: FitFunc = @(x,xdata) x(...

meer dan 11 jaar ago | 1 answer | 0

Question

Different results from radial averaging and averaging along x axis of fft2
I have an image(which is a height profile), and I apply 2D fft (fft2) on the data. Then I compute 2D power spectrum: win=...

meer dan 11 jaar ago | 1 answer | 0

Answered
FFT2 frequency of each pixel in a 2D Fourier transformed image
Hi, I can partly answer your question. I also have problem with this DC component for my height image, I removed the mean fro...

meer dan 11 jaar ago | 2

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Answered
Fit a piece-wise linear function to data: fitting 2 lines to data and finding their corresponding parameters
Thank you so much for your answers, I'm now using Teja's code, I didn't exactly get what you did in this part : min(B(1),B(2)+B(...

meer dan 11 jaar ago | 0

Question

Fit a piece-wise linear function to data: fitting 2 lines to data and finding their corresponding parameters
I have a data series which I know it consists of two parts: two linear sections, the first line is a zero gradient line (y=cte) ...

meer dan 11 jaar ago | 3 answers | 0