Re: [R] add different regression lines for groups on ggplot

Thanks John, yes you are right I have add different smooth statements, here is the code from Dennis for my case: library(ggplot2) ggplot(data = df, aes(x=Var1, y=log(Var2), color=SiteID, group=SiteID)) + geom_point() + geom_smooth(data = subset(df, SiteID != "AL3"), method='lm', formula= y

Re: [R] add different regression lines for groups on ggplot

I have not tried anything like that but have a look at www.google.ca/url?sa=t&rct=j&q=&esrc=s&source=web&cd=3&ved=0CDkQFjAC&url=http%3A%2F%2Fstackoverflow.com%2Fquestions%2F7476022%2Fgeom-point-and-geom-line-for-multiple-datasets-on-same-graph-in-ggplot2&ei=MfHzUej7FoSergG1_ICYAw&usg=AFQjCNH2b72a6