Use loop to generate section of text in rmarkdown

r markdown with loops
rmarkdown tabset for loop
rmarkdown plot loop
r markdown center text
knit_child
rmarkdown list of plots
r markdown child with parameters
rmarkdown::render

I need to produce a report that is composed of several sections, all sections look similar, with only some differences in data. The number of sections is also dependent on the data. What I ultimately want to have is something like this:

```{r}
  section_names = c("A","B","C")
  section_data = c(13,14,16)
```

# some looping mechanism here with variable i

This is section `r section_names[i]`

This section's data is `r section_data[i]`

#more things go here for the section

#end of loop should go here

The result should be a single html/document with all the sections one after the other.

Can you point me to a way for producing such an Rmd file with the loop?

Ideally I would have hoped to see something like in PHP:

<$php for(i=0;i<10;i++) { ?>
   ## some html template + code chunks here
<$php } ?>

r - Use loop to generate section of text in rmarkdown, This question is similar to that one, although it is LateX/RNW based. Besides, this answer demonstrates how to generate a rmarkdown document dynamically. Outputting HTML or PDF results in a loop with R, RMarkdown and Knitr. Feb 7, 2016 Tags: R research statistics reporting RMarkdown Knitr. Recently I have been analyzing a large amount of data with R. A great tool to do this is Rstudio. It is an IDE for R that makes it easy to write your R code, explore the data and show the graphs.

Just sharing the approach I've used eventually.

I wrote a markdown file for the section. prepared the data for each section in the master document, and looped over all the sections I needed, each time calling to knit_child() with the section Rmd.

How to programmatically create parts of a Rmd document (chunks , This is possible using result = "asis" as it allow to write raw Markdown text from .com/questions/36674824/use-loop-to-generate-section-of-text-in-rmarkdown  Consider the situation where I want to create a PDF file that includes a multitude of similar plots. To get multiple plots side by side I use par (mfrow = c (3, 2)). In the minimal example below the number of plots is 18, so given the specified layout R supposedly creates three high-level plots.

I know this is late, but I used this in my code to make numbered sections and it works a treat.

for (k in 1:length(listcsv)){ #Begin Loop at pdf file one and continue until all have been completed
subsection <- paste("5", k, sep = ".")}

this uses the loop number (k) to create the subsection number and then paste it against the section number. This happens to be in section 5, but you could use the same principle to make sections and subsections ad infinitum.

R Markdown, R Markdown - create "loop" slides based on data frame values I want to create a slide for each row of the data frame in the style of: like a loop but I'm not familiar with how they work to generate text in R Markdown. Using two files (an r script and an rmarkdown script) we can create a series of reports. The following example creates five reports using the first five rows of the mtcars data. The rmarkdown file is called by the rscript one time for each unique car name in the subset of the mtcars data.

R Markdown Cookbook, Examples, tips, and tricks of using R Markdown. The cat engine in knitr has provided a way for you to present text content in a code As shown in Section 6.4, you can embed a css code chunk in an Rmd document to style elements with CSS. This example below shows how to generate a file custom.css from a chunk in  The rmarkdown package will use the pandoc program to transform the file into a new format. For example, you can convert your .Rmd file into an HTML, PDF, or Microsoft Word file. You can even turn the file into an HTML5 or PDF slideshow. rmarkdown will preserve the text, code results, and formatting contained in your original .Rmd file.

9.7 Hide code, text output, messages, or plots, Examples, tips, and tricks of using R Markdown. 3.3 Access the document metadata in R code · 3.4 Unnumbered sections · 3.5 Bibliographies and citations code chunk, including the source code, text output, messages, warnings, and plots. Hide warning messages: ```{r, warning=FALSE} # this will generate a warning  How to generate an HTML report. Method 1: Start a new R Markdown file in R Studio. Open R Studio, then go to File \(\rightarrow\) New file \(\rightarrow\) R Markdown. Choose a title and author, but leave the rest as it is, and press the OK button: The R markdown file you opened, already contains example code.

Rmarkdown, You can use any text editor to write your markdown. RStudio already has Let's get right into it. Open R YAML header section (will talk about it at the very end). --- title: "Hello For this examplel I'm going to use simple for loop. We are going  You can use any supported link in a next step action, including a Markdown link to another web page. In most cases, the next action link will be a relative link to another file in the same docset. Non-localized strings. You can use the custom no-loc Markdown extension to identify strings of content that you would like the localization process to ignore.

Comments
  • What do you mean with 'section' in this context? Is it just a block of text to be inserted? Or one chunk for each name?
  • Possible duplicate of Using loops with knitr to produce multiple pdf reports... need a little help to get me over the hump
  • @Ben Not quite. in the post you refer to the question was about producing multiple pdf documents. Here I am interested in basing the structure of the same report on the data, that is, to produce as many sections there need to be (based on the data). similar, but not duplicate.
  • @Heroka Ablock of text, with possible code chunks that need to be "knitted" several times one after the other, each time with slightly different data. I Edited my question to clarify
  • This works, of course, but it is really programming the solution, rather than "templating" it. The beauty of Rmarkdown (my own opinion) is its ability to create a simple document template without programming, using programming only to compute data needed for the document. probably a matter of style. Eventually, I've solved the problem in another way. see the answer below.
  • @amit I tend to disagree. In your question, the whole content of the document is data. So quite naturally, there is a lot "working with data"/programming and little plain text. But the "templating" part is there, too: see my variable template ... Anyways, I'll see your solution soon.
  • @amit Ok, read your solution. Technically, it is very similar. My template is a child document in your case. My sprintf is your knit_child.
  • I agree about the similarity, except that I am very sensitive to "seperation of concerns" issues, so I don't like my templates to be programmed, but rather to be real documents. again - a matter of taste. Also, while not evident from my simple example, the real use require each section to be rather big (more than 3 sentences, more like 3-4 pages of text, graphs & tables) - so the extra RMD file makes more sense, I think.
  • @amit With a more complex template, I completely agree. Just with a simple template, the additional complexity of the child document (another RMD -> MD -> include step) is not worth the separation of concerns advantage, IMHO.