I need to draw multiple line graphs that has some grouping. My data is follows: roc_mj_cmb_t1= c(0.8115,0.8060,0.8114,0.8340,0.8789,0.8743,0.8807,0.8838, 0.7946,0.7904,0.8245,0.8198,0.8721,0.8686,0.8876,0.8763, 0.8204,0.8146,0.7982,0.8350, 0.7977,0.8021,0.8137,0.8176 ) roc_mj_lab= c(rep("Y1_uni_cmb_test1",4),rep("Y1_Joint_test1",4), rep("Y1_uni_cmb_test2",4),rep("Y1_Joint_test2",4), rep("Y1_uni_both_test1",4), rep("Y1_uni_both_test2",4)) settin=c("setting 1","setting 2","setting 3","setting 4","setting 1","setting 2","setting 3","setting 4" ,"setting 1","setting 2","setting 3","setting 4","setting 1","setting 2","setting 3","setting 4" ,"setting 1","setting 2","setting 3","setting 4","setting 1","setting 2","setting 3","setting 4") data_mj=data.frame(settin,roc_mj_cmb_t1,roc_mj_lab) Then… Read More plotting multiple lines in the same plot using ggplot in R