Python Numpy TypeError: ufunc 'isfinite' not supported for the input types

Question

Here's my code:

def topK(dataMat,sensitivity):
    meanVals = np.mean(dataMat, axis=0)
    meanRemoved = dataMat - meanVals
    covMat = np.cov(meanRemoved, rowvar=0)
    eigVals,eigVects = np.linalg.eig(np.mat(covMat))

I get the error in the title on the last line above. I suspect has something to do with the datatype, so, here's an image of the variable and datatype from the Variable Explorer in Spyder:

I've tried changing np.linalg.eig(np.mat(covMat)) to np.linalg.eig(np.array(np.mat(covMat))) and to np.linalg.eig(np.array(covMat)), nothing works. Any ideas? (an example would be great!)

Solution

Your array has a dtype of object, but this should be some floating point dtype. Use e.g.

covMat = np.array(covMat, dtype=float)

to convert the dtype

Comments

[jmd_dk]

What is the dtype og covMat?

[swabygw]

As in the picture, it shows "object" (36 rows, 36 columns).

[jmd_dk]

Ah, that's the dtype. Well that might very well be your problem. Try using np.array(covMat, dtype=float). Does that convertion give you an error?

[Naveen Srikanth]

This has helped me as well. I was using shap and I was getting this type conversion error. I had check one of my attribute was object changed to float and it worked . Thanks for solution