R Markdown

This is an R Markdown document. Markdown is a simple formatting syntax for authoring HTML, PDF, and MS Word documents. For more details on using R Markdown see http://rmarkdown.rstudio.com.

When you click the Knit button a document will be generated that includes both content as well as the output of any embedded R code chunks within the document. You can embed an R code chunk like this:

summary(cars)
##      speed           dist       
##  Min.   : 4.0   Min.   :  2.00  
##  1st Qu.:12.0   1st Qu.: 26.00  
##  Median :15.0   Median : 36.00  
##  Mean   :15.4   Mean   : 42.98  
##  3rd Qu.:19.0   3rd Qu.: 56.00  
##  Max.   :25.0   Max.   :120.00

Including Plots

You can also embed plots, for example:

Note that the echo = FALSE parameter was added to the code chunk to prevent printing of the R code that generated the plot.

library(tidyverse)
## -- Attaching packages --------------------------------------- tidyverse 1.3.1 --
## v ggplot2 3.3.5     v purrr   0.3.4
## v tibble  3.1.6     v dplyr   1.0.8
## v tidyr   1.2.0     v stringr 1.4.0
## v readr   2.1.2     v forcats 0.5.1
## -- Conflicts ------------------------------------------ tidyverse_conflicts() --
## x dplyr::filter() masks stats::filter()
## x dplyr::lag()    masks stats::lag()
library(ggplot2)
best_in_class <- mpg %>%
 group_by(class) %>%
 filter(row_number(desc(hwy)) == 1)
ggplot( mpg,aes(displ, hwy)) +
  geom_point(aes(color = class)) +
 geom_point(size = 3, shape = 1, data =best_in_class ) +
 ggrepel::geom_label_repel(
 aes(label = model),
 data = best_in_class
)

library(tidyverse)
library(ggplot2)
library(hexbin)
## Warning: 程辑包'hexbin'是用R版本4.1.3 来建造的
smaller<-diamonds%>%
  filter(carat<3)
ggplot(data = smaller, mapping = aes(x = carat, y = price)) +
 geom_boxplot(mapping = aes(group = cut_width(carat, 0.1)))

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