Forum: support

RE: Latex problem [ Reply ] By: Achim Zeileis on 2024-12-07 20:22	[forum:50034]
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RE: Latex problem [ Reply ] By: Francisco Goerlich on 2024-12-07 19:07	[forum:50033]
I solved the problem re-installing tinytex. Thanks for your time and for your advice Achim.

RE: Latex problem [ Reply ] By: Achim Zeileis on 2024-12-07 16:36	[forum:50032]
OK, maybe tools::texi2dvi fails because of the space, that's possible. In any case, you switch between the two interfaces by using options(exams_tex = "...") setting it either to "tools" or to "tinytex". If the option is not set the default is to use "tinytex" in case it is installed (and "tools" otherwise).

RE: Latex problem [ Reply ]
By: Francisco Goerlich on 2024-12-07 10:58

[forum:50031]

Many Thanks for the advice Achim,

This tools::texi2dvi("hello.tex", pdf = TRUE) fails

Error en tools::texi2dvi("hello.tex", pdf = TRUE):
unable to run pdflatex on 'hello.tex'
LaTeX errors:
!pdfTeX error: pdflatex.exe (file c:/Users/Francisco Goerlich/AppData/Roaming/TinyTeX/texmf-var/fonts/map/pdftex/updmap/pdftex.map): fflush() failed (Bad file descriptor)
==> Fatal error occurred, no output PDF file produced!

Blank space in Users folder?

The second one, tinytex::latexmk("hello.tex"), works and generates
[1] "hello.pdf"

Thanks a lot.

The curious think is that this worked perfectly last week, and that only give me an error if I attach a datafile to the pdf.

Thanks a lot!

RE: Latex problem [ Reply ]
By: Achim Zeileis on 2024-12-07 00:44

[forum:50030]

Francisco, first try to find out whether there is anything particular about the way exams2pdf() calls LaTeX or whether this problem occurs generally.

As a minimal example, you could try to write a simple hello.tex file:

tex <- c("\\documentclass[a4paper]{article}", "\\begin{document}", "Hello World!", "\\end{document}")
writeLines(tex, "hello.tex")

And then you could try to compile it using the tools package:

tools::texi2dvi("hello.tex", pdf = TRUE)

Or alternatively via tinytex:

tinytex::latexmk("hello.tex")

If these fail, then you need to investigate your LaTeX setup because then there would be a general problem.

If they work, then maybe the problems come from using certain LaTeX packages. Or maybe from compiling it in a certain directory on your system?

RE: Latex problem [ Reply ]
By: Francisco Goerlich on 2024-12-06 23:11

[forum:50029]

With options(exams_tex = "tinytex"), I get the same error, with
options(exams_tex = "tools")
I get
Error en texi2dvi(out_tex[j], pdf = TRUE, clean = TRUE, quiet = quiet):
unable to run pdflatex on 'plain1.tex'
LaTeX errors:
!pdfTeX error: pdflatex.exe (file c:/Users/Francisco Goerlich/AppData/Roaming/TinyTeX/texmf-var/fonts/map/pdftex/updmap/pdftex.map): fflush() failed (Bad file descriptor)
==> Fatal error occurred, no output PDF file produced!

I will investigate the Latex setup.
Many thanks anyway

RE: Latex problem [ Reply ]
By: Achim Zeileis on 2024-12-05 17:55

[forum:50028]

For me exams2pdf() works without problem. Both when going via the system LaTeX installation after

options(exams_tex = "tinytex")

and also when going via tinytex after

options(exams_tex = "tools")

So maybe something changed in your LaTeX setup?

For debugging you can try running exams2pdf(..., texdir = "path/to/folder")

where path/to/folder should be an empty directory where the LaTeX files can be put. Then you can inspect the files there and also try to run pdflatex manually.

Latex problem [ Reply ]
By: Francisco Goerlich on 2024-12-05 17:17

[forum:50027]

07_Latex.zip (2) downloads

Hi,
The attached file, 080321.Rmd, worked perfectly last week, you can see it in the pdf file, exercise 35, page 17, but now I get this error:

! LaTeX Error: Can be used only in preamble.

Error: LaTeX failed to compile plain1.tex. See https://yihui.org/tinytex/r/#debugging for debugging tips. See plain1.log for more info.

All \usepackage{...} commands, as well as \documentclass[...]{...}, are written before \begin{document} in templates.

Any idea?

Thanks a lot.