HelpAStudent
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Accept 20 answers given by other contributors
Awarded to HelpAStudent on 10 Jun 2023
Feeds
Question
How to filter an EEG signal from eye blinking, electrodes movement and calculate the evoked potential?
Hi this is my code: can you help me, because the filtering does not work load 'eeg4.mat' sig = eeg; fs = 256; t=linspace(0...
1 year ago | 1 answer | 0
1
answerQuestion
How to compute the HRV and peak extraction in ECG?
Can you help me to compute the HRV and detection of the peaks from this code: load sig_ecg.mat Fs = 300; L = numel(sig); ...
1 year ago | 1 answer | 0
1
answerQuestion
How to calculate Power Spectral Density using Welch, Periodogram, Yule-Walker, and Burg Methods in ecg?
Hello! I have a signal that has been filtered using a specific code. I'm looking for assistance in calculating the power spectra...
1 year ago | 1 answer | 0
1
answerQuestion
How to Remove the baseline wander from ECG?
Hello there! I've noticed a similar question posted in the community, so I kindly request that you refrain from providing a gene...
1 year ago | 1 answer | 0
1
answerQuestion
How to calculate the heart rate from an ECG signal?
Hi, I have for example this ecg signal from how I did the plot in time: load 'sig.mat' fs = 300; t=linspace(0,length(sig)/fs...
1 year ago | 1 answer | 0
1
answerQuestion
How to analyze and process signals: Loading, nature identification, artifact extraction, non-stationarity modeling, synthetic signal generation, and wavelet filtering?
How can I effectively analyze and process a signal using MATLAB, considering the following tasks: Loading a signal from the "si...
1 year ago | 1 answer | 0
1
answerQuestion
How to proper filter an EMG?
How can I plot the signal from the file "sigtest230504.mat" in MATLAB with a sampling frequency of 1000Hz and identify any artif...
1 year ago | 0 answers | 0
0
answersQuestion
How can I distinguish from an unfiltered signal an eeg signal from an emg one?
Could you please provide guidance on how to plot the signal from the file "sigtest230504.mat" in MATLAB with a sampling frequenc...
1 year ago | 1 answer | 0
1
answerQuestion
How I make a better pre-processing for machine learning?
Hi! I have a data set with different features of data (size 1950x22). With this I have to develop an algorithm through machine l...
2 years ago | 1 answer | 0
1
answerQuestion
How can I replace the value of an outlier rather than delete it?
Hi! I have used this method to find and eliminate the outliers from a gaussian feature of my data set: figure; plot(Fetal_tabl...
2 years ago | 1 answer | 0
1
answerQuestion
How do I confront the outliers from two different methods?
Hi! I have used two different methods to remove outliers from a certain data set. Here they are below: %Grubb's test figure; ...
2 years ago | 0 answers | 0
0
answersQuestion
How I change the name of the variables in a table?
Hi! I have a table like that: Movement_Table = table(Fetal_table.fetal_movement, Fetal_table_tot.r_prolongued_decelerations, F...
2 years ago | 1 answer | 0
1
answerQuestion
How I categorize a features?
Hi! I have a dataset like the histogram here: with some data around 0, some other around 1, 2, 3, 4 and 5. I would like to mak...
2 years ago | 2 answers | 0
2
answersQuestion
How do I confront the value of a matrix?
Hi, I have a matrix 21x6 I have for rows 16:20 confront the column: for example for the first rows to analyze: (ROW 16) (Co...
3 years ago | 1 answer | 0
1
answerQuestion
How do I find the instersection on my plot?
I have a plot with the errorbar. The data coming from a matrix 21x6 and the errorbar from another matrix. I need to find where (...
3 years ago | 1 answer | 0
1
answerQuestion
How do I draw a horizontal line at a fixed height on the y axis and print the coordinates of the points I intercept?
Hi, I have a matlab plot with 6 curves (or functions). My y-axis ranges from 0 to 255. My x-axis ranges from -20 to 20. How ...
3 years ago | 1 answer | 0
1
answerQuestion
How do I change the values of the axes?
Hi I have this plot: figure; errorbar(y,e,'-o') legend('Cist -9dB', 'Cist -6dB', 'Cist -3dB', 'Cist 3dB', 'Cist 6dB', 'Cist 9d...
3 years ago | 1 answer | 0
1
answerQuestion
How do I put the errorbar in the plot?
Hi, I have this program: My program analyzes 21 different images and crops (for each image) 6 ROIs. The ROIs are cropped from ...
3 years ago | 1 answer | 0
1
answerQuestion
How to change the plot on the matrix?
I have a matrix 6x21, when I plot figure; plot(matrix);hold on This makes a plot with 21 curves, just like this: But I wa...
3 years ago | 1 answer | 0
1
answerQuestion
How to plot a linear fit (or Ordinary Least Squares)?
Hi, I have to analyze some data and put them in a graphics. I have a matrix with the mean and another one (with the same size)...
3 years ago | 0 answers | 0
0
answersQuestion
How I plot a matrix wich each rows is a different curves on the graph?
Hi, I have a 6x21 matrix. I want to plot it in one single graph in wich each rows is a different curves.
3 years ago | 1 answer | 0
1
answerQuestion
How can I make a better plot?
Hi, I have 5 sets of data and I want to write a script that reads my 5 matrices (1x21 double) and displays a single figure that ...
3 years ago | 1 answer | 0
1
answerQuestion
How can I plot 5 different variable all together?
Hi, my variable all have this form: A = [18, 20, 50, 60, ...] They all have the same size 1x21 double and they are five. Ho...
3 years ago | 1 answer | 0
1
answerQuestion
How can I save a variable from the workspace to use it for another script?
Hi, I want to save this variable for use that (and other one) in a brand new script
3 years ago | 1 answer | 0
1
answerQuestion
How can I repeat the same algorithm from different folders?
Hi, I have this algorithm which works perfectly. However, it only reads one folder at a time and graphs me only one curve at a t...
3 years ago | 1 answer | 0
1
answerQuestion
How do I plot together 5 different arrays?
Hi, I have 5 different arrays from different script of matlab. Who do I save this 5 arrays (the values in the array are foundame...
3 years ago | 1 answer | 0
1
answerQuestion
How do I create a matrix with specific values?
Hi, I have a matrix (6x21) whose values are those found experimentally. Let's call it: expbasket I want to calculate the erro...
3 years ago | 1 answer | 0
1
answerQuestion
How I sum to matrix wich one is the mean of the value and the other the standard deviation?
you certainly know that a value in order to be defined correctly it must be defined by its mean plus or minus its standard devia...
3 years ago | 1 answer | 0
1
answerQuestion
How to plot the value of a matrix?
Hi, I have a matrix 7x21 double, there is a way to plot the result with this imput: x axis: the columns y axis: the rows
3 years ago | 1 answer | 0
1
answerQuestion
How to compare the values of the same matrix?
I have a matrix 7x21 double. I need to compare each element of one column with each element of the remaining columns. By compare...
3 years ago | 0 answers | 0
0
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