设置日期格式
现在您的报告已经包含更多高层信息，您还想以另一种格式加入日期。请参考下方视频中的日期格式选项表。
本练习是课程的一部分
使用 R Markdown 生成报告
练习说明
- 在 YAML 头部使用
Sys.time()函数修改日期，使其显示为十进制日、月份英文全称和四位年份，例如：08 April 2020。
交互式实操练习
通过完成这段示例代码来试试这个练习。
{"investment_report.Rmd":"---\ntitle: \"Investment Report\"\nauthor: \"Add your name\"\ndate: \"`r format(___, '___')`\"\noutput: html_document\n---\n\n```{r data, include = FALSE}\nlibrary(readr)\n\ninvestment_annual_summary <- read_csv(\"https://assets.datacamp.com/production/repositories/5756/datasets/d0251f26117bbcf0ea96ac276555b9003f4f7372/investment_annual_summary.csv\")\ninvestment_services_projects <- read_csv(\"https://assets.datacamp.com/production/repositories/5756/datasets/78b002735b6f620df7f2767e63b76aaca317bf8d/investment_services_projects.csv\")\n```\n\n\n## Datasets \n\n### Investment Annual Summary\n\nThe `investment_annual_summary` dataset provides a summary of the dollars in millions provided to each region for each fiscal year, from 2012 to 2018.\n```{r}\ninvestment_annual_summary\n```\n\n### Investment Services Projects\n\nThe `investment_services_projects` dataset provides information about each investment project from the 2012 to 2018 fiscal years. Information listed includes the project name, company name, sector, project status, and investment amounts.\n```{r}\ninvestment_services_projects \n```\n\n\n"}