R2-10-第二期-ggplot2画直方图/密度图作业

superhong 2017-11-12 20:34:47 阅读: 912

rm(list = ls())

work.dir <- "D:/R Learning/exercise/R2-02/"

setwd(work.dir)

getwd()  #check working directory

data2_1 <- read.csv("R2-2.1.csv", header=TRUE)

ggplot(data2_1,aes(x = bwt,fill = factor(data2_1$smoke))) + geom_histogram(binwidth = 400,position = "dodge", color= "black") +scale_fill_brewer(palette = "default", labels = c("NO","YES"),name="Smoke") + labs(x = "birth weight", y="count",title = "R2-10")


ggplot(diamonds,aes(x=price,colour = color))+geom_line(stat = "density",size = 0.5)+labs(x = "price", y="density",title = "R2-10")+theme_bw()



 PS:由于在文中插入图片一直失败，所以将图片放在附件了。

 

 
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