LinAlgError: SVD did not converge in Linear Least Squares when trying polyfit

python regression scipy

I don't have your data file, but it almost always that case that when you get that error you have NaN's or infinity in your data. Look for both of those using pd.notnull or np.isfinite


As ski_squaw mentions the error is most of the time due to NaN's, however for me this error came after a windows update. I was using numpy version 1.16. Moving my numpy version to 1.19.3 solved the issue. (run pip install numpy==1.19.3 --user in the cmd)

This gitHub issue explains it more: https://github.com/numpy/numpy/issues/16744

Numpy 1.19.3 doesn't work on Linux and 1.19.4 doesn't work on Windows.

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