adding regression line per group with ggplot2I'm not quite sure whether that's what you want, but have you tried the following?
ggplot(datT,aes(x=Time,y=Abund,color=factor(Temp)))+ geom_point()+geom_line(aes(y=pred))Copy Gives this plot: Conclusion I showed three way by which you can include the effect of predictors on the parameters of some non-linear regression: nlsList, mle2 with formula and mle2 with cu...