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fadams18


Last seen: ongeveer een maand ago Active since 2018

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Keep pairs of corresponding elements in 2 vectors based on conditions
I have the problem here: Using this image below: I want to check for several conditions the orange and green marks are annotati...

meer dan een jaar ago | 1 answer | 0

1

answer

Question


How do I plot horizontal time intervals and ignore others to produce a non continous dashed line plot?
I have this code that produces this code below tTime =[0.0547083333333333 0.0553541666666667 0.0587500000000000 0.0599375000000...

meer dan een jaar ago | 2 answers | 0

2

answers

Question


How do i plot many short horizontal lines when a value is available?
So I have a signal X of length N. Now I have 2 vectores A and B which are time instants on the signal X. i calculate some quotie...

meer dan een jaar ago | 1 answer | 0

1

answer

Answered
Index an array using specific indices
Ah i got it. In my original code I was doing something to s before the indexing, which was chanching its values. My code also wo...

meer dan een jaar ago | 0

Question


Index an array using specific indices
I have a vector x = [0,1,1,0,1,...,N] % x is vector containing either 1s or 0s of size N = 107199. then I have another vector...

meer dan een jaar ago | 4 answers | 0

4

answers

Question


Time shift a signal and save the new signal
I have two signals. one is a clean speech signal and the other is an egg signal. The speech signal is a bit late. So I want to ...

meer dan een jaar ago | 0 answers | 0

0

answers

Question


how do I annote a vector on a signal plot
Hello guys, So i have a signal plot. and then I have a vector that are indexes to some particular events in this signal. So I...

meer dan een jaar ago | 1 answer | 0

1

answer

Question


Use eval to dynamically save matrices
Im trying to name my matrices in a loop according to a list of algorithms I would like to have example GC_1 which contains so...

bijna 2 jaar ago | 0 answers | 0

0

answers

Question


When reading a spectrogram, why is a power of 20 considered higher than 120
Looking at the spectrogram below, it appears the higher power in the cyan color. but its power value is around 20. why is this...

bijna 2 jaar ago | 1 answer | 0

1

answer

Question


How to plot the NMF factorized matrices of a spectrogram as spectrograms too?
I apply non-negative matrix factorization to my spectrogram and obtain the 2 matrices W and H [W, H] = nmf(mySTFT,rank) % r...

bijna 2 jaar ago | 0 answers | 0

0

answers

Question


My imagesc plot seems to be inverted
Below is my code. and the attached plot . Mloops = [1,10:10:90]; Missing=10:10:90; for e = 1:length(Mloops) eta =Mloo...

meer dan 2 jaar ago | 0 answers | 0

0

answers

Question


What is the name of this plot?
does anyone know the name of this type of plot? and how can i do this if I have 3 variables Missing Value prop =0.1:0.2:0...

meer dan 2 jaar ago | 1 answer | 0

1

answer

Answered
How do i combine multiple cells into one
ok never mind figured it out final_cell=[cel_1; cell_2; cell_3]

bijna 3 jaar ago | 0

Question


How do i combine multiple cells into one
I have 3 cells each containting three 20x60 matrices cell_1 = { 20x60, 20x60 , 20x60 } ... cell_3= { 20x60, 20x60 , 20x60 } ...

bijna 3 jaar ago | 2 answers | 0

2

answers

Question


RMSE of 1 row of a matrix?
Hello Matlabers, I have this code i used to find the RMSE sensor=3 ; RMSE = zeros(sensor,30); RMSE(:,i) = vecnorm(F(:,1:se...

bijna 3 jaar ago | 1 answer | 0

1

answer

Question


make an r by m permutation matrix
I have the following code : A = eye(r); L = []; for i = 1:10 A = A(randperm(r),:); L = [L A]; % 10 x 100 matrix wit...

ongeveer 3 jaar ago | 0 answers | 0

0

answers

Question


How to verify SNR of a signal after using the awgn function
I just added 60db noise to my signal and i wish to verify if the added noise is correct. How do i check this? pw=60; Wthe...

meer dan 3 jaar ago | 1 answer | 0

1

answer

Question


How can I use the MovieLens Dataset in matlab
I want to use the MovieLens dataset for my NMF algorithm for matrix completion. I have a function which i use to sample data in...

meer dan 3 jaar ago | 0 answers | 0

0

answers

Question


how can i reshape an indexed vector
Hello, I have the following problem: Q % e.g. 300 x 300 matrix M % e.g. 300 x 300 matrix omega=find(Q); % omega becomes a 86...

meer dan 3 jaar ago | 2 answers | 0

2

answers

Question


How can I add a 0db noise to my randomly generated data?
I simulated some random data and wish to add different db levels of noise to the data below n = 5000; m = 5000; r =5; Wt...

bijna 4 jaar ago | 1 answer | 0

1

answer

Question


dynamically name function output
I would like to to dynamically name fuction output based on some inputs Like: As my variable para.algo will be changing, is i...

bijna 4 jaar ago | 0 answers | 0

0

answers

Question


How can I randomly sample 10% and 20% pixels of an image
Hello guys I have an image of size 2,048×2,048 pixels, I would like to stack the 3 channels to get a matrix of size 6,144 ×...

bijna 4 jaar ago | 0 answers | 0

0

answers

Question


Randomly samplying a matrix
Im currently modifying an algorithm which randomly samples a given matrix by % Omega - set of observed entries. Should be li...

bijna 4 jaar ago | 0 answers | 0

0

answers

Question


Does running multiple instances of Matlab slow down algorithm?
I have 4 algorithms that i want to benchmark. and it takes time to run, and i dont want to run each of them seperatly, so i sta...

ongeveer 4 jaar ago | 0 answers | 0

0

answers

Question


What is this Matlab symbol '' | ''
Guys, could someone explain what this expression does. Ive never seen this expression before. Thank you. pGrad=gradX(gradX<0|X>...

ongeveer 4 jaar ago | 1 answer | 0

1

answer

Question


save all columns into a new variable in a loop
I have the following setup. Every time k changes i get new values of T. T is of size 1x1000, so i want to end the end have a 3...

ongeveer 4 jaar ago | 1 answer | 0

1

answer

Question


reconstruction Error of 2 colored images
I have an original image of dimension 300x300x3 (RGB) after removing some entries, I apply an algorithm to reconstuct the ori...

ongeveer 4 jaar ago | 0 answers | 0

0

answers

Question


Re-extract final images after vectorizing a set of images
I have 20 images each of which is 175 x 200. then i create a matrix X and unfold each image into it. so that X becomes a (175*20...

meer dan 4 jaar ago | 0 answers | 0

0

answers

Question


Given a matrix A^n. Comparing normal multiplication versus Diagonalization. I expect the former to be faster but its not in my case
I have been learning diagonalization and SVD. I tried to show by code that doing A^n = A* A* A*......* n is slower than when we ...

meer dan 4 jaar ago | 2 answers | 0

2

answers

Question


Error using sparse Index into matrix must be positive.
Im converting a code from python to Matlab % Python Code % ksq and old_dim are dimensions e.g. 5, or 10 C = np.arange(old_di...

meer dan 4 jaar ago | 1 answer | 0

1

answer

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