[R] plot gam "main effect functions" in one graph

Pancrazio Bertaccini bertaccini at econ.unito.it
Wed Jul 9 12:36:54 CEST 2008

Dear R users,
I have a question about the plot with the package gam.
I need to plot different main effect functions, related to different
gam models, in the same graphics (i.e. the same covariate about
different models).
I used the plot.gam e preplot.gam documentations. Using preplot.gam I
can plot the single function but I'm not able to put all the functions
Does anybody can help me.
Thank you in advance.

Pancrazio Bertaccini,
PhD student,
Università di Torino - Department of Statistics and Applied Mathematics

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