Susan

Last seen: plus d'un an il y a | Actif depuis 2020

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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...

plus de 2 ans il y a | 1 réponse | 0

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Question

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...

plus de 2 ans il y a | 1 réponse | 0

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Question

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...

plus de 2 ans il y a | 1 réponse | 0

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Question

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...

plus de 2 ans il y a | 2 réponses | 0

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Question

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...

presque 3 ans il y a | 1 réponse | 0

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Question

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 ...

presque 3 ans il y a | 1 réponse | 1

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Question

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 ...

presque 3 ans il y a | 2 réponses | 0

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Question

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...

presque 3 ans il y a | 1 réponse | 1

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Question

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 ...

presque 3 ans il y a | 1 réponse | 0

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Question

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...

environ 3 ans il y a | 1 réponse | 0

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Question

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...

environ 3 ans il y a | 1 réponse | 0

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Question

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...

environ 3 ans il y a | 2 réponses | 0

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Question

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...

environ 3 ans il y a | 2 réponses | 0

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Question

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...

environ 3 ans il y a | 1 réponse | 0

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Question

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 ...

environ 3 ans il y a | 1 réponse | 0

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Question

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...

environ 3 ans il y a | 1 réponse | 0

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Question

Error using trainNetwork (line 184)
Hi All, I am trying to classify sequence datasets using deep learning by applying net = trainNetwork(XTraining,YTraining,layer...

plus de 3 ans il y a | 1 réponse | 0

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Question

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 ...

plus de 3 ans il y a | 1 réponse | 0

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Question

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...

environ 4 ans il y a | 2 réponses | 0

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Question

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...

environ 4 ans il y a | 2 réponses | 0

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Question

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...

plus de 4 ans il y a | 1 réponse | 0

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Question

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 ...

plus de 4 ans il y a | 1 réponse | 0

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Question

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...

plus de 4 ans il y a | 2 réponses | 0

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Question

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...

plus de 4 ans il y a | 1 réponse | 0

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Question

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...

plus de 4 ans il y a | 1 réponse | 0

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Question

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...

plus de 4 ans il y a | 1 réponse | 0

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Question

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...

plus de 4 ans il y a | 1 réponse | 0

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Question

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-...

plus de 4 ans il y a | 1 réponse | 0

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Question

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\...

plus de 4 ans il y a | 1 réponse | 0

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Question

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 ...

plus de 4 ans il y a | 1 réponse | 0

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