[R] Package 'MASS' (polr): Error in svd(X) : infinite or missing values in 'x'

[Jeremy Little]

Hi Jessica,

thank you for your prompt response. Yes I had deduced it had to do with the
Hessian.

However, I am not clear what "all columns having range the order of one"
actually means and what this means for my data. Does this mean removing
decimals (ie by shifting the decimal place)?

I would have thought that the data matrix was already "sensibly scaled".

Any further insight greatly appreciated.

Regards


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