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**Content Feed**

Error in running loop for importing .cnt data file for multiple files

Hey Luke Did you end up solving this problem.? Currently i am facing the exact same error actually.

8 mois ago | 0

Question

How to implement shrinkage LDA?

Hi I have a classification task where i want to use shrinkage LDA, i have worked with simple LDA but i don't know how i can d...

9 mois ago | 1 answer | 0

### 1

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How to downsample a 3-D matrix data?

Hi I have a 3-D matrix (A) of order a x b x c. And the data is recorded at 1056Hz sampling frequency. The data is already fil...

9 mois ago | 1 answer | 0

### 1

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How to zero mean a 3-D array

Hi I have a 3-D matrix of size a x b x c. Where a is actually the sample value i want to zero mean. Is it possible to zero ...

9 mois ago | 2 answers | 0

### 2

answersQuestion

Concatenate 3-D matrix in a for loop

Hi I have 25 matrices of 3-D 150x66x1000. I need to concatenate them in a for loop to get an output of 3750x66x1000. How can...

environ un an ago | 3 answers | 0

### 3

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Default learning rate and initial weights for trainscg neural network

Hi I am trying to train a neural network with trainscg function. and i want to know the default parameters for following: 1:...

environ un an ago | 1 answer | 0

### 1

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How to select 10% of a matrix with an increment of 10% until 80%

Hi I have a matrix x with size 200x353. I need to sleect 10% of the matrix with an incerement of 10% until 80%, so something li...

environ un an ago | 1 answer | 0

### 1

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Leave one out of an array in a for loop

Dear all I have a program where i need to save one variable separately and concatenate i-1 elements in another variable (Then...

environ un an ago | 0 answers | 0

### 0

answersQuestion

Select sample from an array

Hello I have an array of 200x259 samples. I need to make a new array of all the rows but for column i have to reject 3 samples ...

environ un an ago | 1 answer | 0

### 1

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How to calculate peak voltages of a waveform.?

I have an EEG potential waveform, which has multiple peaks (Positive and negative). I'm using the findpeaks function to find the...

environ 2 ans ago | 1 answer | 0

### 1

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How to take Mean of cell array ?

Hi I have a struct variable A with 1x15 cell, where each cell array is of variable size in it's 1st dimension and other two dim...

environ 2 ans ago | 1 answer | 0

### 1

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How to save data at each iteration in a cell array?

Hi, I have saved data sests where i have two variables of 3-D, A and B. I want to load it for each subject and save it in a cel...

environ 2 ans ago | 1 answer | 0

### 1

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Error using table.init (line 401) The VariableNames property must contain one name for each variable in the table.

Hi I am trying to save the variables in the form of .xls table but it gives the following error: Error using table.init (line ...

environ 2 ans ago | 1 answer | 0

### 1

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How can I test a trained Neural Network Model on new test data?

Hi, I am trying to test a trined NN model in MATLAB but it's giving the wrong output. I have trained the model on input of or...

environ 2 ans ago | 0 answers | 0

### 0

answersQuestion

How to process files of a particular order in MATLAB?

Hi I have saved data for multiple subject's, multiple sessions with the following name format: Sub1_S1_Epochs,Sub1_S2_Epochs,...

environ 2 ans ago | 1 answer | 0

### 1

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How to test neural network trained model?

Hi I am using NN for classification purpose, i know how to do this for one subject, by didviding the data in training:testing...

environ 2 ans ago | 1 answer | 0

### 1

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Dot indexing is not supported for variable of this type.

Hi all, I want to use EEGLAb function to remove the epochs with a value greater than +-150uV in the time interval of 0-0.8ms. I...

environ 2 ans ago | 2 answers | 0

### 2

answersQuestion

Save variables in a folder

Hi, I have written a code to extract 'epochs' from 'data'. I need to save 'ErrPsEpochs' and 'NonErrPsEpochs' for each subject a...

environ 2 ans ago | 1 answer | 0

### 1

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Calculate mean of an array in time windows.

Hi i have EEG data recorded at 1200hz from 5 channels, for 10 repetitions, and i need to calculate mean of each 1s signal in 10...

plus de 2 ans ago | 1 answer | 0

### 1

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Spectrogram of EEG Signal

Hello I have EEG signals which i need to classify, for that i need to change the EEG signals to the Images, i.e by taking spect...

plus de 2 ans ago | 0 answers | 0

### 0

answersQuestion

Maximum number of input neurons to the neural network

Hi, I have EEG data to classify, for 2 classes. The data dimesnion is 30000x512. Where 512 is the number of samples (50:50 for ...

plus de 2 ans ago | 1 answer | 0

### 1

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How to save a neural network to test on a new dataset?

Hi, I am using the following code to train and test NN for 2-class classification. I need to save the trained network to test o...

plus de 2 ans ago | 1 answer | 0

### 1

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How to prepare the Input for feedforward neural network?

Hi All, I have to use feedforward neural network for 2-class classification problem. I have EEG data (of 1s, recorded at the sa...

plus de 2 ans ago | 1 answer | 0

### 1

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Repeat 3-D array elements

Hi I have a 3-d array x of size 67x960x80. I need to repeat the elements of the array 3 times to make it an array of size 67x96...

plus de 2 ans ago | 1 answer | 0

### 1

answerQuestion

Index must be a positive integer less than or equal to the number of test sets.

Hi i'm trying to create 10-fold cross validation for my CNN. To create the 10 batches I'm using a for loop, but it's giving thi...

plus de 2 ans ago | 1 answer | 0

### 1

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'Index must be a positive integer less than or equal to the number of test sets.'

Hi i'm trying to create 10-fold cross validation for my CNN. To creat the 10 batches i'm using for loop, but it's giving this e...

plus de 2 ans ago | 0 answers | 0

### 0

answersQuestion

Divide the matrix randomly, based on columns

Hi I have a matrix x of size 78000x204. I need to divide it into nonoverlapping but random 70:15:15 percent of the data, based ...

plus de 2 ans ago | 1 answer | 0

### 1

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Shuffle the rows a matrix

Hi I have a matrix x of size 512x3600, and another matrix y=512x1, I need to shuffle the entire rows of matrix x and alement of...

plus de 2 ans ago | 1 answer | 0

### 1

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String to Categorical array

Hi I have an array of x=[zeros(1,120) ones(1,240)]; I want to convert it into a categorical array of 'Z' of size 1x120 and 'O...

plus de 2 ans ago | 1 answer | 0

### 1

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COnvert 3d matrix to 2D

I have a matrix of x=1200x30x410, i need to change it to 2D as x=3600x410. How to do that.? it gives an error by using reshape ...

plus de 2 ans ago | 1 answer | 0