[R] Green curve/line does not appear on the plot

[Duncan Murdoch]

On 10/01/2021 2:17 p.m., varin sacha via R-help wrote:
> Dear R-experts,
> 
> I dont get any error message but I can't get the green curve/line on the plot.
> What is going on ? How to solve my problem ?

Look at the values of robustfit.new.  They are far smaller than any of 
the other values, and don't fall in the range of the plot.  I think 
you've messed up the call to robustgam().

Duncan Murdoch

> 
> Here is the R code :
> 
> ####################
> PIB.hab<-c(12000,34000,25000,43000,12500,32400,76320,45890,76345,90565,76580,45670,23450,34560,65430,65435,56755,87655,90755,45675)
> ISQ.2018<-c(564,587,489,421,478,499,521,510,532,476,421,467,539,521,478,532,449,487,465,500)
> 
> A=c("Australie","Autriche","Belgique","Canada","Chili","Rép. Tchèque","Danemark","Estonie","Finlande","France","Allemange","Grèce","Hongrie","Islande","Irlande","Israël","Italie","Japon","Corée","Lettonie")
>   
> plot(ISQ.2018,PIB.hab)
> 
> library(basicPlotteR)
> 
> # Add non-overlapping text labels
> 
> addTextLabels(ISQ.2018, PIB.hab, A, col.label="black")
> 
> 
> ## LOESS FIT
> mod=loess(PIB.hab~ISQ.2018,span=1)
> yfit=predict(mod,newdata=ISQ.2018)
> o=order(ISQ.2018)
> lines(ISQ.2018[o],yfit[o],col="blue",lwd=2)
> 
> #GAM
> library(mgcv)
> fit3=gam(PIB.hab~s(ISQ.2018,bs='ps'))
> x.new<- seq(range(ISQ.2018)[1], range(ISQ.2018)[2])
> gamfit.new <- as.vector(predict.gam(fit3,data.frame(ISQ.2018=x.new),type="response"))
> lines(x.new, gamfit.new, col="red", lwd=2)
> 
> #Robust GAM
> library(robustgam)
> true.family <- poisson()
> fit=robustgam(PIB.hab,ISQ.2018, sp=0,family=true.family,smooth.basis='ps',K=3)
> x.new <- seq(range(ISQ.2018)[1], range(ISQ.2018)[2])
> robustfit.new <- pred.robustgam(fit, data.frame(X=x.new))$predict.values
> lines(x.new, robustfit.new, col="green", lwd=2)
> ####################
> 
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