---
title: "数据前处理+ggplot2画图实践"
subtitle: 《区域水环境污染数据分析实践》<br>Data analysis practice of regional water environment pollution
author: 苏命、王为东<br>中国科学院大学资源与环境学院<br>中国科学院生态环境研究中心
date: today
lang: zh
format:
  revealjs:
    theme: dark
    slide-number: true
    chalkboard:
      buttons: true
    preview-links: auto
    lang: zh
    toc: true
    toc-depth: 1
    toc-title: 大纲
    logo: ./_extensions/inst/img/ucaslogo.png
    css: ./_extensions/inst/css/revealjs.css
    pointer:
      key: "p"
      color: "#32cd32"
      pointerSize: 18
revealjs-plugins:
  - pointer
filters:
  - d2
---


```{r}
#| echo: false
knitr::opts_chunk$set(echo = TRUE)
source("../../coding/_common.R")
library(tidyverse)
```


## 数据说明

```{r}
mpg
```

## 完成图1


```{r}
#| echo: false
mpg |>
ggplot(aes(x = displ, y = hwy, color = class)) +
  geom_point()

```

## 完成图2


```{r}
#| echo: false
ggplot(mpg, aes(x = displ, y = hwy, color = drv)) + 
  geom_point() +
  geom_smooth(aes(linetype = drv))
```

## 完成图3


```{r}
#| echo: false
ggplot(mpg, aes(x = displ, y = hwy)) + 
  geom_point(aes(color = class)) + 
  geom_smooth()
```

## 完成图4


```{r}
#| echo: false
ggplot(mpg, aes(x = displ, y = hwy)) + 
  geom_point() + 
  facet_wrap(~cyl)

```

## 完成图5


```{r}
#| echo: false
ggplot(mpg, aes(x = drv, fill = class)) + 
geom_bar(position = "fill")
```


## 综合实践：三维荧光数据处理