.rmd文件的访问名称，并在R中使用 [英] Access name of .rmd file and use in R

问题描述

我正在编织一个名为MyFile.rmd的降价文件. 在编织过程中如何访问字符串MyFile并将其用于:

I am knitting a markdown file called MyFile.rmd. How can I access the string MyFile during the knitting and use it for:

• 在YAML标头的标题部分中使用吗?

• 在随后的R块中使用?

• use in the title section of the YAML header?

• use in subsequent R chunk?

---
title: "`r rmarkdown::metadata$title`"
author: "My Name"
date: "10. Mai 2015"
output: beamer_presentation
---

## Slide 1

```{r}

rmarkdown::metadata$title

```

导致...

...这是错误的，因为我要编织的文件的名称不同.

... which is incorrect as the file I am knitting is named differently.

> sessionInfo()
R version 3.1.2 (2014-10-31)
Platform: x86_64-apple-darwin13.4.0 (64-bit)

locale:
[1] de_DE.UTF-8/de_DE.UTF-8/de_DE.UTF-8/C/de_DE.UTF-8/de_DE.UTF-8

attached base packages:
[1] stats     graphics  grDevices utils     datasets  methods   base     

loaded via a namespace (and not attached):
[1] digest_0.6.8    htmltools_0.2.6 rmarkdown_0.5.1 tools_3.1.2     yaml_2.1.13

推荐答案

只需总结一下益辉的答案:

Just summarize Yihui's answer:

    ---
    title: "`r knitr::current_input()`"
    author: "My Name"
    date: "10. Mai 2015"
    output: beamer_presentation
    ---

    ## Slide 1

    ```{r}

    knitr::current_input()

    ```

哪个编织完成了任务.

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