Susan
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Accept 20 answers given by other contributors
Awarded to Susan on 18 Feb 2022
Feeds
Question
Error on saving .fig files
Hi All, I have a nested for loop, and at the very last for loop, I plot the data and save them as a ".fig" in a folder. It work...
1 year ago | 1 answer | 0
1
answerQuestion
How to calculate the duty cycle of a time signal in a for loop?
Hi All, I have multiple time signals and like to compute their duty cycles automatically within a "for loop". For example the d...
1 year ago | 1 answer | 0
1
answerQuestion
How to solve an equation contains norminv?
Hi all, I'd like to solve the following equation. sol = []; for L = -20:10:120 syms x eqn = 10*log10(10.^(0.1*(nor...
1 year ago | 1 answer | 0
1
answerQuestion
How to align multiple signals?
Hi Matlab experts, I'm trying to align these signals but have yet to be successful. The signals are attached. They are periodi...
2 years ago | 2 answers | 0
2
answersQuestion
How to measure any disturbance in a signal that is exceeding a threshold?
Hi, Assuming having a noisy signal as attached, I'm interested in measuring any disturbance that exceeds a threshold, i.e., 0.1...
2 years ago | 1 answer | 0
1
answerQuestion
How to get the spectrum plot of a 5G NR signal generated by MATLAB?
Using the 5G NR signal generator, I generated a signal and then exported the MATLAB script. Then I ran this script, hoping I'd ...
2 years ago | 1 answer | 1
1
answerQuestion
How to remove/add elements to an array?
Hi All, I have a 115x1 vector, say A which is attached, that I'd like to remove the elements that satisfy some conditions and ...
2 years ago | 2 answers | 0
2
answersQuestion
How to find the QRS complex for this ECG signal?
Hi all, Could somebody please tell me how I can find the QRS complexes of this ECG signal? The signal is attached. Thanks in a...
2 years ago | 1 answer | 1
1
answerQuestion
How to create a polar plot?
Hi All, I have a signal (a complex tall vector) and I'd like to creat polar plots of it with a line connecting points that are ...
2 years ago | 1 answer | 0
1
answerQuestion
How to replicate the same graph using "Time scope"?
Hi All, I've got a question about the "Wireless Waveform Generator" app and "Time Scope," and your help is much appreciated. U...
2 years ago | 0 answers | 0
0
answersQuestion
How to chop up/segment a periodic signal?
I have a normal EKG signal (a periodic signal), and I 'd like to automatically chop up the signal into individual cycles (contai...
2 years ago | 1 answer | 0
1
answerQuestion
How to calculate the small changes in a signal?
Hi all, I have an ECG signal and would like to know what minor amplitude changes I can recognize. The goal is to see if I'm abl...
2 years ago | 2 answers | 0
2
answersQuestion
How to calculate the peak-to-peak amplitude of a waveform?
Hi All, Sorry if I’m asking about the obvious, but could somebody please tell me how to calculate the peak-to-peak voltage of t...
2 years ago | 2 answers | 0
2
answersQuestion
How to expand a waveform on x-axis?
Hi All, I want to expand a waveform on the x-axis. Specificlly, in the following fig, I would like to expand a waveform in such...
2 years ago | 1 answer | 0
1
answerQuestion
How to find a pattern in an array?
Hi All, I have an array (attached) and I'd like to find where a specific pattern happens in the array. I know that by knowing ...
2 years ago | 0 answers | 0
0
answersQuestion
How to read a .dat file containing an ECG signal?
Hi, I have an ECG signal contains data collected from 12 leads, saved in a .dat file (attached here). Could someone please hel...
2 years ago | 1 answer | 0
1
answerQuestion
Error using trainNetwork (line 184)
Hi All, I am trying to classify sequence datasets using deep learning by applying net = trainNetwork(XTraining,YTraining,layer...
2 years ago | 1 answer | 0
1
answerQuestion
How to plot the amplitude ratio and phase differences for two time series signals ?
Greetings, I'd like to plot the amplitude ratio and phase differences of two signals. I used the following code to calculate ...
3 years ago | 1 answer | 0
1
answerQuestion
How to remove outliers and smooth the complex signals?
Hi there, I am working on a complex data set-- a 300-by-1000 matrix which each element is a complex number and each column of t...
3 years ago | 2 answers | 0
2
answersQuestion
How to load .mat data from another folder?
Hey, I have several mat files located in a folder called "matFile". the script is located in the uperfolder of this matFile fol...
3 years ago | 2 answers | 0
2
answersQuestion
Could somebody please help me with Object-Oriented Programming in MATLAB?
Hi All, I am working on a script that call a "classdef" function and I need to have access to a value in this "classdef". Could...
3 years ago | 0 answers | 0
0
answersQuestion
Customizing the tick values and labels along x axis
Hi All, When I plot(1:20, f), the x-axis are shown from 1 to 20. However my real x values are x = Columns 1 through ...
3 years ago | 1 answer | 0
1
answerQuestion
How to define both integer and decimal increment in one for loop?
Hi all, I would like to define one for loop that goes from 0 to 1 with an increment of 0.1 and then goes from 1 to 30 by an inc...
3 years ago | 2 answers | 0
2
answersQuestion
Why do I get 'Out of Memory' error?
Hi All, I have a dataset which contains 316663 cells, each cell contains either a 600-by-1 or a 300-by-1 matrix. I got the err...
3 years ago | 1 answer | 0
1
answerQuestion
How to create indices for the k-fold cross-validation?
Hi All, I'd like to create indices for the k-fold cross-validation using indices = crossvalind('Kfold',Labels,k); The "Label...
3 years ago | 1 answer | 0
1
answerQuestion
How to combine n cell arrays into one giant one?
Hello, I have a 12-by-190 cell array dataset, each contains either a 1-by-504 cell array or a 1-by-336 cell array. Each of thes...
3 years ago | 1 answer | 0
1
answerQuestion
kmeans clustering of matrices
Hi All, I have 12X190 cells. Each cell contains a complex matrix of size n*550 (assuming each row is an observation on 550 va...
3 years ago | 1 answer | 0
1
answerQuestion
How to calculate the duty-cycle of a WiFi signal in WLAN toolbox?
Hi All, I just checked out the BLE coexistence model with WLAN signal interference (https://www.mathworks.com/help/comm/ug/ble-...
3 years ago | 1 answer | 0
1
answerQuestion
How to extract contents of multiple tar files in a loop?
Hello Everyone, I have multiple .tar.gz files that I'd like to extract contentes of them. For one file I use path = 'C:\Users\...
3 years ago | 1 answer | 0
1
answerQuestion
How to access data in a cell array?
Hi, I have an 40*8 cell array, called Q. Each cell contains an 64×64×128 double matrix. I would like to have a foor loop on ...
4 years ago | 1 answer | 0
1
answer
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