使用Knitr将Markdown文档的部分插入另一个Markdown文档中 [英] insert portions of a markdown document inside another markdown document using knitr

问题描述

我知道这可以使用php和其他语言来完成，但是想知道是否可以使用knitr来完成以下工作:

I know this can be done with php and other languages, but was wondering whether the following could be accomplished using knitr:

假设我有一个Rmarkdown(.rmd)文档，其中包含两个标题1部分:

Let's say I have an Rmarkdown (.rmd) document with two heading 1 sections:

# This is the first heading for the first document
Lorem ipsum dolor sit amet

# This is the second heading for the first document
plot(object)

1. 问题1:如果打开另一个.rmd文档，我如何创建链接，以便在分析该文档时可以显示其内容以及第一个文档的全部内容.例如:

1. Question 1: if open another .rmd document, how can i create a link so that when parsed this document would present its content as well as the whole content from the first document. For example:

# This is the first heading for the second document
Lorem ipsum dolor sit amet

[command goes here to insert the first document]

结果将是:

# This is the first heading for the second document
Lorem ipsum dolor sit amet

# This is the first heading for the first document
Lorem ipsum dolor sit amet

# This is the second heading for the first document
[plot shows up here]

问题2:knitr是否允许我选择文档1的选定部分并将其仅插入到文档2中?例如，仅标题1及其下方的内容，或仅标题2及其图形

Question 2: would knitr allow me to select and insert only selected portions of document 1 into document 2? For example, only heading 1 and the content below it, or only heading 2 and its plot

推荐答案

1. 就是块选项child的用途，例如在second.Rmd中，您可以

1. that is what the chunk option child is for, e.g. in second.Rmd, you can

```{r child='first.Rmd'}
```

有点棘手，但是您可以手动调用knit_child()，例如

```{r echo=FALSE, results='asis'}
# knit the first three lines of first.Rmd
cat(knit_child(text = readLines('first.Rmd')[1:3]), sep = '\n')
```

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