Sparse matrix calculate warning: Matrix is close to singular or badly scaled.

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Benyang Hu
Benyang Hu on 25 Mar 2022
Answered: Mohammed Hamaidi on 26 Mar 2022
I am using two around 9 million sparse matrix to do a sample calculation. MATLAB is giving me this warning. How should I correct this?
>> displacement = K_matrix_sys\F_matrix;
Warning: Matrix is close to singular or badly scaled. Results may be inaccurate. RCOND = 1.326659e-16.
K_matrix_sys is sysmetric matrix, F_matrix is same size array. How should I fix this? Where should I start to check with?

Answers (1)

Mohammed Hamaidi
Mohammed Hamaidi on 26 Mar 2022
You don't have to correct any thing.
The matrix is ​​close to singular (the determinant close to zero)
Matlab indicate that Results may be inaccurate.
The problem is in the matrix itself

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