Relationship to R poly function

[xaedes]

I want to figure out how polyFit from the polyreg library relates to Rs poly function (https://www.rdocumentation.org/packages/stats/versions/3.5.2/topics/poly)

What are the differences?
polyFit can perform PCA beforehand, poly not.

Is there any more?

Does poly have some limitations that polyFit has not which I am not seeing?

[matloff]

Sorry for the delay. We are revamping polyFit, almost done.