用R语言画柱状图

柱状图： 源码： slices <- c(3,1,4,2) names <- c("甲","乙","丙","丁") png("r-graph-sample.png") barplot(beside=TRUE, slices,#纵轴取值 names.arg=names,#边框名字 border="black",#边框颜色 col=c("purple","green3","blue","red"),#框内线条颜色 density = c(7.5,12.5,17.5,22.5),#框内线条密度 angle = c(45,60,120,135),#框内线条倾斜角度 width = c(4,2.2,2.2,3),#边框宽度 space = c(1.5,0.5,0.5,1),#边框间距 ylim=c(0,5),#纵轴取值范围) title(xlab="横")#横轴名字 title(ylab="竖")#纵轴名字 lbls <- round(slices/sum(slices)*100) lbls <- paste(lbls,"%",sep="")# ad % to labels lbls <- paste(names, lbls)# add percents to labels #图例 legend("topright",lbls, fill=c("purple","green3","blue","red"), density = c(7.5,12.5,17.5,22.5), angle = c(45,60,120,135), )