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

Jeremy Little jeremy.little at my.jcu.edu.au
Tue Jul 10 00:48:19 CEST 2012

Hi Jessica,

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

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.


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