knitr installation in Lyx

Question

I was trying to install Knitr package in Lyx but I encountered the following error.

"The module knitr requires a package that is not available in your Latex installation or a converter that you have not installed. Latex output may not be possible. Package missing Knitr>latex."

I would greatly appreciate if you could please help me to fix this problem. I checked the Lyx module but couldn't figure out exactly what to do. I am a new user to Lyx and Knitr.

Thank you in advance

Answer 1

I had this same error message on my Windows 10 machine and found that the error was in the path I provided for R. If you don't have the path all the way to the R executable, it will not work. Change the path in Lyx with Tools>Preferences>Paths and edit the PATH prefix content. I had to add

                C:\Program Files\R\R-3.6.0\bin\x64

Answer 2

That is often an indication of the PATH problem; see the first section of the LyX/Sweave/knitr manual (link to PDF is at http://yihui.name/knitr/demo/lyx/)