About using GAM Models in R

Submitted by anxoestevez on May 22, 2012

Currently I'm replicating the exercise did by Wood (2006) about the relationship between air pollution and death rates in Chicago, using GAM models.

So, I followed the code he used in his book. The library is called "gamair" and the data frame is "chicago".

I put this (exactly like the book):

gam(death~s(time,bs="cr",k=200)+pm10median+so2median+o3median+tmpd,data=chicago,family=poisson)

But I got an error:

Error in s(time, bs = "cr", k = 200) : 
  unused argument(s) (bs = "cr", k = 200)

Somebody could explain me this?

Thank you so much.