在Rmarkdown中从Knit转换为pdf时出错

Question

Code

```{r, eval=TRUE}
library(caret)

plot(iris$Sepal.Length)
```

Error reported

pandoc.exe: pdflatex not found. pdflatex is needed for pdf output. Error: pandoc document conversion failed with error 41 In addition: Warning message: running command '"C:/Program Files/RStudio/bin/pandoc/pandoc" +RTS -K512m -RTS t4.utf8.md --to latex --from markdown+autolink_bare_uris+ascii_identifiers+tex_math_single_backslash --output t4.pdf --template "C:\\Users\\15235330\\Documents\\R\\R-3.3.0\\library\\rmarkdown\\rmd\\latex\\default-1.15.2.tex" --highlight-style tango --latex-engine pdflatex --variable graphics=yes --variable "geometry:margin=1in"' had status 41 Execution halted No TeX installation detected (TeX is required to create PDF output). You should install a recommended TeX distribution for your platform: Windows: MiKTeX (Complete) - http://miktex.org/2.9/setup (NOTE: Be sure to download the Complete rather than Basic installation) Mac OS X: TexLive 2013 (Full) - http://tug.org/mactex/ (NOTE: Download with Safari rather than Chrome _strongly_ recommended) Linux: Use system package manager

Answer 1

After getting a new computer, I found this post I wrote a year ago, and the technique I documented below still worked. However my original instructions were not clear, and I have updated to hopefully help others having the same challenge. Of course, YMMV.

I spent hours trying to resolve this. I installed Miktex, but was unable to get the packages directly from the package manager due to sitting behind a firewall at work. I finally was able to resolve this using the following steps:

1. Install Miktex
   • I used the basic installer
2. Create a folder to install Miktex packages, eg "C:\\miktex_pkgs"

3. Go to the CTAN package archive and download the following .tar.lzma files:

   • fancyvrb
   • framed
   • microtype
   • miktex-zzdb1-2.9
   • miktex-zzdb2-2.9
   • mptopdf
   • titling
   • upquote
   • url

4. After downloading the above files, move the above .tar.lzma files to the folder you created, eg "C:\\miktex_pkgs"

5. Open the MikTex Console Application downloaded in Step 1
   • Select "Packages"
   • Click "Install From" drop down
   • Click "change"
   • Select "Local package repository (file system)"
   • Click "Next",
   • Choose the folder you downloaded the .tar.lzma files to in Step 3
   • Click "Finish"
   • Click the "Update DB" logo next to the + - tool icons
   • Give a little bit of time to update.
6. The packages should now show in the package list in the Miktex Console
7. Close R studio out and re open.

Now you should be able to knit as PDF.