y<-gam(a~s(b),family=gaussian(link=log),data) y<-gam(loga~s(b), family =gaussian (link=identity),data) y<-gam(loga~s(b),family=gaussian(link=log),data) what are the diffent these 3 equations? -- View this message in context: http://r.789695.n4.nabble.com/log-link-function-problem-tp3625014p3625014.html Sent from the R help mailing list archive at Nabble.com.