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Interpolation of a matrix in 2D for complex numbers
To solve this i'm using interp2 right now. E_x_y_t([1:length(x)/4, length(x)/4+length(x)/2+1:length(x)],:,:) = []; E_x_y_t(:...
circa un anno fa | 0
Domanda
Interpolation of a matrix in 2D for complex numbers
Hello I have a 3D matrix of a field E_x_y_t. say it's 600 x 700 x 2048 (correlated to x y and t) At some point I'm deleting ...
circa un anno fa | 2 risposte | 0
2
risposteDomanda
FFT of gaussian if radial domain
Hi I defind a gaussian with cartesian dimain as written below. How do I make the same but with radial? without the angle (thet...
circa un anno fa | 1 risposta | 0
1
rispostaDomanda
script transition from cartesian to cylindric issues
Hi I wrote a code for beam propagation in a medium but for some reason the cartesian vs the cylindric is different. I think i...
circa un anno fa | 0 risposte | 0
0
risposteDomanda
non uniform data using imagesc is wrong
Hi I have a matrix of values (see attached), with spaced frequencies. than i use the command imagesc(1:step_number, frequenc...
circa un anno fa | 1 risposta | 0
1
rispostaDomanda
Long running time with loops, is it possible to cancel the loops?
Hi I have a code with many loops but it runs forever. Could you please take a look and let me know if somehow i can change to...
circa un anno fa | 1 risposta | 0
1
rispostaDomanda
3d fitting surface from data. find function and it's tranverse
Hi I have data in the excel file. You can see there Col and Hor results. and input of two angles. (theta, phi) between -55 ...
quasi 3 anni fa | 0 risposte | 0
0
rispostefourier image of angled shape, and changes when cropping
Hi Attaching my script. you will see in the begining cropping=0; you can change that to 1 to make sure - something with my ...
circa 3 anni fa | 0
Domanda
fourier image of angled shape, and changes when cropping
Hi Attached is an image (please unzip) which has some kind of spot in an angle. I'm performing the following fft as in the ph...
circa 3 anni fa | 2 risposte | 0
2
risposteDomanda
Ellipse angle dimension and axis
Hi I need help with fitting automatically to ellipse. ( I have a photo of a spot from a camera. (added A=imread of the file i...
circa 3 anni fa | 1 risposta | 0
1
rispostaDomanda
is it possible to replace for loops to fast it up?
Hello, Example of something i have is: for ang=1:length(angle) parfor dist=1:length(distance) sol(ang,dist)=abs(pu...
quasi 6 anni fa | 1 risposta | 0
1
rispostaDomanda
extracting phase from ifft on fft of a signal
Hello, I'm trying to extract a phase ifft function. But i'm getting something not logical (a triangle) In order to complica...
quasi 6 anni fa | 0 risposte | 0
0
risposteDomanda
Applying bandpass around my signal
Hello, I'm trying to apply a bandpass around freq 0 without luck. I'd be happy to receive some help please x=scan11(1,:)...
quasi 6 anni fa | 0 risposte | 0
0
risposteDomanda
short pulse fft and comprssion
Hello, I have a code that should take an initial pulse of FWHM gaussian in how i define it and add some phase to it in the sp...
quasi 6 anni fa | 0 risposte | 0
0
risposteDomanda
implementing an envelope to a measured oscillated signal
Hello, I need to implement an envelope on oscillating scans I'm doing but I run into difficulties doing it. (the purpose is ...
quasi 6 anni fa | 0 risposte | 0
0
risposteDomanda
noisy signal processing question. signal in detector with slope shift in some areas
Hello, I have several scans I did in a photodiode using an interferometer. The detector's size if very small so we see some...
quasi 6 anni fa | 0 risposte | 0
0
risposteDomanda
getting rid of for loop in a function with long arrays
Here is a small function to calculate the neff of SM fiber. To this function I insert three long arrays: n_core, n_clad and lamd...
quasi 7 anni fa | 2 risposte | 0