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Jhon Gray


Last seen: 1 year ago |  Active since 2018

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Question


cwtfilterbank magnitude linear scale
I am using the cwtfilterbank function to generate a scalogram from a signal. However, the frequencies on the Y-axis of the scalo...

1 year ago | 0 answers | 0

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answers

Question


Stratified K-fold validation using crossval funtion
I am trying to customize the "Weighted kNN"-based classification code generated after a 10-fold cross validation on my data usin...

3 years ago | 0 answers | 0

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answers

Question


Converting row to column in text file
I have a text file with annotation like this I want to shift every alphabet in colum form. Like this. Tried several ...

3 years ago | 1 answer | 0

1

answer

Question


Decomposition of EEG signal using wavelet packet transform?
Hi all, I'm having a bit of a trouble breaking down an EEG signal into these bands using wavelet packet decomposition. I tried...

3 years ago | 0 answers | 0

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answers

Question


How to assign value in multidimensional variable?
I was trying to assign value in a multidimensional variable. My first code is wroking Here it is: prod = 1; ch = 1; AAA(pro...

3 years ago | 1 answer | 0

1

answer

Question


How to insert axes manually in a RGB image?
I want to use manual axes information in an image. I tried axes image and edit axes after imshow. Both times failed to show the ...

3 years ago | 1 answer | 0

1

answer

Question


Why is activations function not working with custom made CNN model?
I was trying extarct feature from CNN model. I was succesful with series net like alexnet using activation. But it is not wroki...

4 years ago | 0 answers | 0

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answers

Question


Passing discrete feature along with Image in CNN model
I was performing a binary classification problem. Where each image has corresponding discreate features in an excel sheet. Curre...

4 years ago | 0 answers | 0

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answers

Question


How to save variable as binary file?
I have a variable dimension double in workspace.This contains 4 individual physiological data in 4 rows. I want to save this va...

4 years ago | 1 answer | 0

1

answer

Question


Is there any way to add cross validation in trainingOptions function while using DNN?
Currently, I am training a CNN model to classify images. I am using splitEachLabel function to split the dataset into two segmen...

4 years ago | 1 answer | 0

1

answer

Question


How to plot a graph along with axes graph?
I want to creat a plot like this. is there any function for this? How to make it?

4 years ago | 1 answer | 0

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answer

Question


How do I implement Linear regression with leave-one-out cross validation in MATLAB?
I have a data set of 87 variables and 1 outcome where all are continuous. I need to use linear regression with leave-one-out cro...

4 years ago | 2 answers | 0

2

answers

Question


Why does stepwiselm function output NaN with model interactions?
I was doing stepwise regression and implementing stepwiselm in commant line mdl = stepwiselm(tbl,'interactions'). My dimension o...

4 years ago | 1 answer | 0

1

answer

Question


Optimized code for loop, If-statement for large dataset
I was hoping to delete some certain rows using condion. My data is in double format (790127*24) I approximate the total code nee...

5 years ago | 1 answer | 0

1

answer

Question


How do I apply PCA (Principal Component Analysis) on single Channel ECG data?
I have one channel ECG signals in a variable let, X(double) and I want apply PCA (Principal Components Analysis) on all of them ...

5 years ago | 1 answer | 0

1

answer

Question


Why do I get the error "Undefined function or variable" using cwtfilterbank ?
I am receiving the following error message while using "cwtfilterbank". How can I resolve this issue? I am using MATLAB 2017b. ...

5 years ago | 1 answer | 0

1

answer

Question


How can I load .psv file to MATLAB?
I have downlaoded datase from PhysioNet/Computing in Cardiology Challenge 2019. Here all the data are in .psv format. Can anyone...

5 years ago | 2 answers | 0

2

answers

Question


How can I create table from matrix?
I have a matrix like this and I want to create a table with a specific heading of each column. <</matlabcentral/answers/upl...

6 years ago | 2 answers | 0

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answers