数据仓库与数据挖掘期末考试第二题

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options(repos = list(CRAN="http://cran.rstudio.com/"))
install.packages("tidyverse")

## 程序包'tidyverse'打开成功，MD5和检查也通过
## 
## 下载的二进制程序包在
##  C:\Users\quan\AppData\Local\Temp\Rtmpc9BvWj\downloaded_packages里

library(nycflights13)
library(tidyverse)

## ── Attaching packages ─────────────────────────────────────── tidyverse 1.3.1 ──

## ✔ ggplot2 3.3.6     ✔ purrr   0.3.4
## ✔ tibble  3.1.7     ✔ dplyr   1.0.9
## ✔ tidyr   1.2.0     ✔ stringr 1.4.0
## ✔ readr   2.1.2     ✔ forcats 0.5.1

## ── Conflicts ────────────────────────────────────────── tidyverse_conflicts() ──
## ✖ dplyr::filter() masks stats::filter()
## ✖ dplyr::lag()    masks stats::lag()

ggplot(data = diamonds, mapping = aes(x=carat,y=price))+
  geom_boxplot(mapping = aes(group = cut_width(carat,0.1)))

ggplot(data = diamonds,mapping = aes(x=carat,y=price))+
  geom_boxplot(mapping = aes(group = cut_number(carat,20)))