1. ---
    2. title: "test"
    3. author: "Peng"
    4. date: "`r format(Sys.time(), '%d %B, %Y')`"
    5. output:
    6. html_document:
    7. toc: True
    8. toc_float:
    9. collapsed: false
    10. ---
    11. ```{r setup, include=FALSE}
    12. knitr::opts_chunk$set(echo = TRUE)
    13. knitr::opts_chunk$set(warning = F)
    14. knitr::opts_chunk$set(message = F)

    ```