Mar 02, 2016 system(“pandoc -s test1.html -o test1.pdf”) Step 6: Produce HTML and PDF Output Files with R. In RStudio, run all of the code in your repot.R file. This will read the test.Rmd file, use that to create a test1.md file, use the.md to create a test1.html file, and finally use the.html to create a test1.pdf file. Alternatively, pandoc can use ConTeXt, roff ms, or HTML as an intermediate format. To do this, specify an output file with a.pdf extension, as before, but add the -pdf-engine option or -t context, -t html, or -t ms to the command line. The tool used to generate the PDF from the intermediate format may be specified using -pdf-engine.
In this post I will walk through the steps to create PDF file using R
Step 1: Install MiKTeX
Go to http://miktex.org/download and follow the instructions to install MiKTeX on your computer.During the installation process be sure to change Preferred Paper from A4 to Letter if necessary. (You do not need to install this if you only want HTML output)
Step 2: Install Pandoc
Go to https://code.google.com/p/pandoc/downloads/list and follow the instructions to install Pandoc on your computer.(You do not need to install this if you only want HTML output)
Pdf To Url
Step 3: Install Knitr and Markdown
Open R or RStudio and install the packages Knitr and Markdown on your computer by running the following code:
# Install knitr
>install.packages(“knitr”)
# Install knitr
>install.packages(“markdown”)
Step 4: Create a .Rmd File Containing Your Analysis
Open RStudio and click on File then New then R Markdown. Then click File then Save As. Enter test.Rmd as the name of the file and click Save.
When the new markdown (.Rmd) file is created it very helpfully is already populated with an example (the below code).
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 <http://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. You can embed an R code chunk like this:
Pandoc Convert Html To Pdf
“`{r}
summary(cars)
“`
You can also embed plots, for example:
“`{r, echo=FALSE}
plot(cars)
“`
Note that the `echo = FALSE` parameter was added to the code chunk to prevent printing of the R code that generated the plot.
Note the basic structure – the markdown file is both R code and Knitr code. Any code between the sets of three apostrophes is R code, any code outside of the sets of three apostrophes is Knitr. The R code tells R what to do and the Knitr code creates the HTML file.
Step 5: Create a .R File to Run the .Rmd File
If you want to create PDFs there is still more work to do. In RStudio click File then New then R Script to create a new .R file. This file will be used to tell MiKTeX and Pandoc to create a PDF based on your HTML file. Paste the following code into this R file. Then click File then Save As. Enter any name you want and click Save. I saved this file as report.R
# Load packages
require(knitr)
require(markdown)
# Create .md, .html, and .pdf files
knit(“test.Rmd”)
markdownToHTML(‘test1.md’, ‘test1.html’, options=c(“use_xhml”))
system(“pandoc -s test1.html -o test1.pdf”)
Step 6: Produce HTML and PDF Output Files with R
In RStudio, run all of the code in your repot.R file. This will read the test.Rmd file, use that to create a test1.md file, use the .md to create a test1.html file, and finally use the .html to create a test1.pdf file.