Impossibile compilare PDF in R Studio (errore LaTeX: file `lmodern.sty 'non trovato.)

Question

Non riesco a compilare il file PDF di base in R studio.

Questo è il mio messaggio di errore:

output file: Report.knit.md 

! LaTeX Error: File `lmodern.sty' not found. 

Type X to quit or <RETURN> to proceed, 
or enter new name. (Default extension: sty) 

Enter file name: 
! Emergency stop. 
<read *> 

l.3 \usepackage 

pandoc: Error producing PDF from TeX source 
Error: pandoc document conversion failed with error 43 
Execution halted 

# > sessionInfo() 
# R version 3.1.2 (2014-10-31) 
# Platform: x86_64-unknown-linux-gnu (64-bit) 
# 
# locale: 
# [1] LC_CTYPE=en_US.UTF-8  LC_NUMERIC=C    
# [3] LC_TIME=en_US.UTF-8  LC_COLLATE=en_US.UTF-8  
# [5] LC_MONETARY=en_US.UTF-8 LC_MESSAGES=en_US.UTF-8 
# [7] LC_PAPER=en_US.UTF-8  LC_NAME=C     
# [9] LC_ADDRESS=C    LC_TELEPHONE=C    
# [11] LC_MEASUREMENT=en_US.UTF-8 LC_IDENTIFICATION=C  
# 
# attached base packages: 
# [1] stats  graphics grDevices utils  datasets methods base  
# 
# loaded via a namespace (and not attached): 
# [1] digest_0.6.8  htmltools_0.2.6 rmarkdown_0.5.3.1 tools_3.1.2  
# [5] yaml_2.1.13 

Answer 1

Come siete su una casella di Ubuntu:

edd@max:~$ locate lmodern.sty    ## look for this file 
/usr/share/texmf/tex/latex/lm/lmodern.sty 
edd@max:~$ dpkg -S $(locate lmodern.sty)  ## look for package with this file 
lmodern: /usr/share/texmf/tex/latex/lm/lmodern.sty 
edd@max:~$ 

che indica che si desidera installare il pacchetto lmodern:

sudo apt-get install lmodern 

È inoltre possibile search online at package.Ubuntu.com che suggerisce anche il pacchetto lmodern.