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Measurement Covariance Matrix must be non-empty

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Suraj Parasuram 2023-7-14

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https://ww2.mathworks.cn/matlabcentral/answers/1996118-measurement-covariance-matrix-must-be-non-empty

编辑： Maneet Kaur Bagga 2023-8-31

采纳的回答： Maneet Kaur Bagga

Hi,

I am currently using the EKF block for one of my simulations. As soon as I start the simulation, it shows an error as shown below:

I have double checked my R matrix and it contains values but for some reason EKF block is throwing an error saying it is empty.

A quick Internet search regarding this issue returned nothing.

Any guidance on this would be helpful

Thanks,

Suraj

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Ayush 2023-8-14

It would be beneficial for us if you share your model so that we can analyze it.

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采纳的回答

Maneet Kaur Bagga 2023-8-31

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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1996118-measurement-covariance-matrix-must-be-non-empty#answer_1298116

编辑：Maneet Kaur Bagga 2023-8-31

在 MATLAB Online 中打开

Hi @Suraj Parasuram,

As mentioned in the above problem I understand that the R matrix is not empty while running the EKF Block for the simulation. The issue might be encountered due to the license and hence you can check using the below code:

% Check if Control System Toolbox is licensed
if license('test', 'Control_System_Toolbox')
    disp('Control System Toolbox is licensed.')
else
    disp('Control System Toolbox is not licensed.')
end

Also, you can refer to MATLAB answers addressing the similar queries using the following links:

https://www.mathworks.com/matlabcentral/answers/1676834-why-do-i-get-the-error-failed-to-evaluate-mask-initialization-commands-cannot-change-the-model-wh

https://www.mathworks.com/matlabcentral/answers/1630170-simulink-error-failed-to-evaluate-mask-initialization-commands

Thank You!

Maneet Bagga

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