R2-29-第二次作业-ggplot2画直方图、密度图

CISO 2017-11-09 14:52:42 阅读: 980

  1. 直方图

    > library(ggplot2)

    > dat1 = read.csv(file.choose(),header = T,stringsAsFactors = F)

    > dat1$smoke = factor(dat1$smoke,levels = c(0,1),labels = c("NO", "YES"))

    > ggplot(dat1,aes(x = bwt,fill = smoke))+geom_histogram(binwidth = 400, position="dodge", alpha = 0.4)+labs(x="birth weight",y="count")+ggtitle("R2-29-CC")+theme(title = element_text(face="bold"),axis.title.x=element_text(face="bold"),axis.title.y = element_text(face="bold"),legend.text = element_text(face="bold"))

    Rplot01.png

  2. 密度图

    > ggplot(diamonds,aes(x=price,colour = color))+geom_line(stat = "density",size = 0.8)+ggtitle("R2-29-CC")+theme(title = element_text(face = "bold"),axis.title.x = element_text(face = "bold"),axis.line.y = element_text(face = "bold"),legend.text = element_text(face = "bold"))

Rplot02.png

 
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