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Swetha Polemoni

MathWorks

Last seen: 1 day ago Active since 2020

I am Application Support Engineer at Mathworks.
Disclaimer: Any articles /ideas/opinions here are my own and no way reflect that of Mathworks

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Answered
Matlab 2021a freezes on startup for ~5 min, then becomes responsive
Hi Please reach out to our Support Team. They would be able to assist you with installation and licensing issues.

7 days ago | 0

Answered
NUFFT vs FFT?
Hi fft and nufft both are fast ways to calculate Discrete Fourier Transform of any signal. The only disadvantage of fft over n...

7 days ago | 0

Answered
increase processing speed of code entropy histcount
Hi In the following documentation general techniques to improve the performance has been mentioned Techniques to Improve Perfo...

7 days ago | 0

Answered
Adding a new plot to existing figure
Hi You cannot have two y axes in fit however you can have z axis along with x and y axes to fit your data. Here is an example ...

7 days ago | 0

Answered
Compare two Fourier series to depict the signal smoothness
Hi You can use findpeaks to find local maxima i.e., all the peaks in the signal. Now invert the siganl and use "findpeaks" to ...

7 days ago | 0

Answered
How to share variables across Matlab App Designer Apps
Hi A similar question has been discussed on the following MATLAB answers link. You may find this helpful How to share data bet...

7 days ago | 0

Answered
Can a neural net be trained to solve this problem?
Hi It is my understanding that you want to categorise trace segment to its mean line(class). You can use Classification for the...

7 days ago | 0

Answered
Problem installing the Communications Toolbox Support Package for USRP
Hi Here is a possible work around/solution that you may find useful It still should be possible to programmatically setup your...

8 days ago | 0

Answered
i am trying to solve ODE with the help of laplace transform, but it shows error in doing so, why?
Hi The error is due to usage of x(t) before decalaring it . Try the following line of code. syms x(t) Hope this helps

9 days ago | 0

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Answered
Transformation of time domain to frequency domain
Hi You may find the following documention Digital and Analog Filters useful to understand more about filters. This documentati...

9 days ago | 0

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Answered
Training a audio classification neural network with .csv's containing features over time
Hi It is my understanding that you want to feed the network with tabularTextDatastore. You can use transform to convert the t...

9 days ago | 0

Answered
MATLAB Neural Network - Forward Propagation
Hi, You might want to check on the format of for loops you have used(for ii = 0: ii < length(NINPUTS)). This can be replaced w...

10 days ago | 0

Answered
in the picture below you can find a message which describe what I need to fix in these two equations in the description.
Hi As the warning clearly mentioned, try replacing inv(A + diag(zeta))*b with b/ inv(A + diag(zeta)). Because in Matlab inv(...

10 days ago | 0

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Answered
Biexponential fit help?
Hi, The following answer might help you. Biexponential fitting (non-linear regression)on Matlab

14 days ago | 0

Answered
How to save data when execution is paused
Hi Divij Gupta In Matlab, whenever a pause button is pressed all the workspace variables are updated according the latest run o...

14 days ago | 0

Answered
Error Using Prediction With LSTM
Hi It is observed that you are calling "predict" on the layerGraph object/layers array. predict is not allowed on layerGraph ob...

1 month ago | 0

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Answered
Under, perfect, and over sampling a function and zero-order hold interpolation
Hi, For a signal sin(2*pi*fm*t) , fm is its frequency. To sample this signal replace t = N*Ts. where N is an integer and Ts is ...

1 month ago | 0

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Answered
Get image mouse click position in App Designer
Hi, The following answer might help you. How to get pixel's position of an image in UIAxis in AppDesigner?

1 month ago | 0

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Answered
signal.fftconvolve equivalent in Matlab
Hi Avik Mahata It is my understanding that you want to do convolution and autocorrelation in matlab. You can use Matlab functio...

1 month ago | 0

Answered
Plotting graph with different color points
Hi To generate a random value in a given range, "randi" Matlab function can be used. Following is an answer that will help to ...

1 month ago | 0

Answered
Rectangle Detection in An Image
Hi Ryan Murphy, You may find Edge detection methods for finding object boundaries in images helpful.

1 month ago | 0

Answered
How to get started with data classification using deep learning toolbox?
Hi Jinyang Du It is my understanding that you want to do a classification on time series data. You may find Classification LST...

1 month ago | 0

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Answered
Generation of SSB signal.
Hi You may try using Simulink blocks such as Signal Generator, Second-Order Filter(Low pass filter), product(Balanced modulato...

3 months ago | 0

Answered
Change preferences in ClassificationLearner (or other apps) ?
Hi As mentioned in this documentation parallel option is available only when you have Parallel Computing Toolbox. So to chang...

3 months ago | 0

Answered
convert to matlab function
Hi You may find MATLAB Onramp course useful for converting your code to MATLAB function.

4 months ago | 0

Answered
Step function in Simulink is not plotting correctly
Hi You can change the settings of step block as shown in the below figure. Step time is the time taken to jump from initial va...

4 months ago | 1

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Answered
passing parameters to python script on raspberry pi4
Hi This might help you. system(['python filedirectory/file.py parm1 parm2']);

4 months ago | 0

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Answered
To find conditions in integration
Hi It is my understanding that you want the conditions where your integral value is some constant. Following code snippet might...

4 months ago | 0

Answered
IIR bands stop filter
Hi You can use designfilt to design filters in Matlab. Have a look at Name-Value Pair Arguments such as 'PassbandFrequency', 'S...

4 months ago | 0

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