Merge branch 'PUB'
* PUB: 更新第8次作业模板 更新第8次作业模板
This commit is contained in:
		@@ -4,22 +4,21 @@ author: 姓名
 | 
			
		||||
format: html
 | 
			
		||||
---
 | 
			
		||||
 | 
			
		||||
 | 
			
		||||
# 示例问题,在R中输出`1+2+3+...+100`的结果
 | 
			
		||||
 | 
			
		||||
采用`for`循环完成,代码如下:
 | 
			
		||||
# 下载airquality.xlsx,并读取数据
 | 
			
		||||
 | 
			
		||||
```{r}
 | 
			
		||||
total <- 0
 | 
			
		||||
for (i in 1:100) {
 | 
			
		||||
  total <- total + i
 | 
			
		||||
}
 | 
			
		||||
total
 | 
			
		||||
# 下载至临时文件
 | 
			
		||||
tmpxlsxpath <- file.path(tempdir(), "airquality.xlsx")
 | 
			
		||||
download.file("https://drwater.rcees.ac.cn/git/course/RWEP/raw/branch/PUB/data/airquality.xlsx",
 | 
			
		||||
  destfile = tmpxlsxpath)
 | 
			
		||||
airqualitydf <- readxl::read_xlsx(tmpxlsxpath, sheet = 1)
 | 
			
		||||
metadf <- readxl::read_xlsx(tmpxlsxpath, sheet = 2)
 | 
			
		||||
```
 | 
			
		||||
 | 
			
		||||
 | 
			
		||||
# 根据`airqualitydf.xlsx`,按采样点统计白天(8:00-20:00)与夜晚(20:00-8:00)中空气质量指数(AQI)中位数,按城市统计低于所有采样点AQI30%分位值的采样点占比,列出上述占比最高的10个城市(不考虑采样点数低于5个的城市)。
 | 
			
		||||
 | 
			
		||||
 | 
			
		||||
 | 
			
		||||
 | 
			
		||||
 | 
			
		||||
# 按照不同城市分组,统计白天与夜晚AQI中位数是否具有显著差异。
 | 
			
		||||
 
 | 
			
		||||
@@ -24,7 +24,7 @@ website:
 | 
			
		||||
  page-navigation: true
 | 
			
		||||
  page-footer: "Copyright 2024, [Ming Su](https://drwater.rcees.ac.cn)"
 | 
			
		||||
  navbar:
 | 
			
		||||
    background: "grey"
 | 
			
		||||
    background: "light"
 | 
			
		||||
    search: true
 | 
			
		||||
    right:
 | 
			
		||||
      - icon: house
 | 
			
		||||
 
 | 
			
		||||
										
											Binary file not shown.
										
									
								
							
		Reference in New Issue
	
	Block a user