I wanna use R to complete the quantile regression and then draw the picture by Plot function.
BUT I wanna one plot just like the picture1.
I have no idea how to complete the picture in plot function or gglot2
Thanks for your help!
fit1 = rq(TQ ~ PACE + ORTG + DRTG, tau = c(0.10,0.25,0.50,0.75,0.90), data = ZSL)