rmarkdown: pandoc: pdflatex not found

Question

When I use the render{rmarkdown} to produce pdf file from .Rmd file on my Mac, an error message says

pandoc: pdflatex not found. pdflatex is needed for pdf output.

Answer 1

For those using Dunk's answer(For people using UBUNTU) who get a Font at not loadable: Metric (TFM) file not found. error, you also need:

sudo apt-get install texlive-fonts-recommended texlive-latex-recommended

This does unfortunately expand the size of the texlive install considerably, but it is still about half the size of a texlive-latex-extra install.