[R] plotting GAM

[Tkadlec Emil]

Dear colleagues, 
I would like to have GAM regression lines (package gam) thicker than the default 
setting does. Is there any way to change the width of regression line when plotting 
gam.objects from the package GAM with more than one predictor? Changing lwd 
parameter in plot function controls all line components, including points making them 
thicker as well, which is not what I would like to have. 
Thanks for help. 
Best, 
Emil

**************************************************************
Emil Tkadlec
Palacky University                PrF UP
Faculty of Science                katedra ekologie        
Department of Ecology             tr. Svobody 26
tr. Svobody 26                    771 46 OLOMOUC
771 46 Olomouc                    tel. 58 563 4561
Czech Republic                    
email: tkadlec at prfnw.upol.cz