[R] gam() in Splus and R

[Ko-Kang Kevin Wang]

Hi,

Is there any difference in the gam() function in R and Splus?

I just tried to do an Ace Plot (plotting the result of the gam() ) on a
dataset.  R gave me four (the data set has one response and four
explanatory variables) ace plot with perfectly straight lines.  I kind of
felt that it is highly unlikely, so I tried it in Splus.  Using the exact
commands Splus gave me four completely different ace plots (in fact so
different that three of them suggested a quadratic polynomial
transformation).

Am I doing something wrong here?

Cheers,

Kevin

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Ko-Kang Kevin Wang
Statistical Analysis Division Leader
Software Developers' Klub (SDK)
University of Auckland
New Zealand

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