[R-sig-ME] How to add a random slope using gam package?

[王 嘉炜]

Dear R users,


I am using the gam function in *gam package* to model the ozone pollution concentration according to some environmental covariates. I have scanned the document of this package but it seems like only random intercept is available.  Does anyone know how to add a random slope into model?

Any advice would be greatly appreciated!
Jiawei Wang


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