Hello, I'm glad it helped.One more thing, I've just noticed that I copied the gam call in lines() but you don't have to refit the model,
b.gam <- predict(fit) is enough. Hope this helps, Rui Barradas Às 20:35 de 23/04/20, varin sacha escreveu:
David, Rui, Many thanks for your response. Thanks Rui it perfectly works. Best, Le jeudi 23 avril 2020 à 06:18:46 UTC+2, Rui Barradas <ruipbarra...@sapo.pt> a écrit : Hello, Inline. Às 23:29 de 22/04/20, varin sacha via R-help escreveu:Dear R-experts, Here below the reproducible example. I can not add the "green" gam curve on the plot. The last line of my R code gives me problem. There is a message error that I don't understand. Many thanks for your precious help. ####################################################### a <- as.Date(c("2020-02-25", "2020-02-26","2020-02-27","2020-02-28","2020-03-1","2020-03-2","2020-03-3","2020-03-4","2020-03-5","2020-03-6","2020-03-7","2020-03-8","2020-03-9","2020-03-10","2020-03-11","2020-03-12","2020-03-13","2020-03-14","2020-03-15","2020-03-16")) b<- c(20,28,45,68,89,123,154,190,245,302,460,379,298,300,245,189,165,100,90,78) df<-data.frame(a,b) plot(as.Date(a),b,pch=16,type="o",col="blue",ylab="nombre de nouveaux cas covid19",xlab="Dates", main="Nombre d’infectés quotidien Covid-19 en Suisse" ,ylim=c(20,460), xlim=c(min(as.Date(a)),max(as.Date(a)))) ##### fit loess curve with family symmetric loess.smooth(a,b, span = 2/3, degree = 1, family = c("symmetric")) lines(loess.smooth(a,b, span = 2/3, degree = 1, family = "symmetric"),col="purple") d <-as.numeric(a) ##### Fit GAM library(mgcv) fit <- gam(b ~ s(d, bs="cr"),data=df) summary(fit) lines(gam(b ~ s(d, bs="cr"),data=df,col="green"))Instead of this last line try b.gam <- predict(gam(b ~ s(d, bs = "cr"))) lines(a, b.gam, col = "green") Hope this helps, Rui Barradas############################################################ ______________________________________________ R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
______________________________________________ R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
