无法完成将r标记项目编织到pdf或HTML

install.packages("rmarkdown")
install.packages("knitr")

update.packages(ask = FALSE)

rmarkdown::render("yourfile.Rmd", output_format = "pdf_document")

rmarkdown::render("yourfile.Rmd", output_format = "html_document")

---
title: "Sample Document"
author: "Your Name"
date: "Today's Date"
output:
  pdf_document: default
  html_document: default
---

## 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 <https://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.

## Including Plots

You can also embed plots, for example:

```{r pressure, echo=FALSE}
plot(pressure)

### 结论
如果遇到无法将R标记项目编织到PDF或HTML的问题，首先检查所有必要的软件和包是否安装正确，然后尝试清理和重建文档。通过查看错误日志，通常可以找到并解决问题。