Rbook http://ggplot2.org/book/ pdf: ms.mcmaster.ca/~bolker/misc/ggplot2-book.pdf lệnh xoay dữ liệu từ cột sang hàng newdata b=read.csv("C:/Users/BINH THANG/Dropbox/R - Learning/drbinh/Sacdiamete.csv") mdata <- melt(b, id=c("id","group")) Xóa missing newdata <- na.omit(mdata) Xuất qua excel install.packages("xlsx") library("xlsx") write.xlsx(mdata, "C:/Users/BINH THANG/Dropbox/R - Learning/drbinh/new Dec 1/drbinh.xlsx") write.xlsx(isleep, "C:/Users/BINH THANG/Dropbox/Korea/STudy/Thesis/data management/DataR/dataR.xlsx") Xóa nền và các định dạng khác myplot + theme_bw () + theme ( panel.border = element_blank (), panel.grid.major = element_blank (), panel.grid.minor = element_blank (), axis.line = element_line ( colour = "black" )) Màu trong R http://research.stowers.org/mcm/efg/R/Color/Chart/index.htm ggbarplot(bd1, x = "educ2", y = "c...