[R] Can someone please have a look at this query on stackoverflow?

[Olivier Crouzet]

And indeed again (I did not understand your previous question exactly
at first), the 'hard-coded' definition of a landscape a4 sheet would
therefore be:

paperwidth=29.7cm, paperheight=21cm

Olivier.

On Sat, 18 Nov 2023 13:20:49 +0530
Ashim Kapoor <ashimkapoor using gmail.com> wrote:

> Dear Olivier,
> 
> Many thanks for your reply.
> 
> Very cool.
> 
> You know what I thought ? I thought you had modified the A4 sheet size
> to compute the paperheight and paperwidth ?
> 
> I wonder if that's another way of proceeding.
> 
> Best,
> Ashim
> 
> On Sat, Nov 18, 2023 at 12:51 PM Olivier Crouzet
> <olivier.crouzet using univ-nantes.fr> wrote:
> >
> > Dear Ashim,
> >
> > these are documented in the LaTeX 'geometry' package (see for
> > example on CTAN: https://ctan.org/pkg/geometry). As I added in my
> > response on Stackoverflow, several parts in the RMarkdown header
> > actually concern information that are processed by LaTeX to
> > actually generate the PDF, among which the 'geometry' line. For
> > someone who is used to working with LaTeX, it is relatively natural
> > to 'identify' LaTeX options in these lines even though they are not
> > structured exactly this way in a LaTeX document (but their names
> > are the same).
> >
> > Concerning the choice for these specific numbers, it is relatively
> > arbitrary. I've been doing this on LaTeX for years when I want to
> > generate slides without using the 'beamer' document class and the
> > things to take into account are:
> >
> > - These dimensions express the physical sizes of the pdf page (in a
> > sense, what their size would be if you print the document without
> > adapting to the paper in your printer)
> > - If these sizes are reduced... the relative font size will increase
> > because LaTeX will project the same font on a smaller virtual paper,
> > - And if these sizes are increased... the relative font size will
> > decrease because LaTeX will project the same font on a larger
> > virtual paper,
> > - I processed starting from 16x9cm sizes, resp. for paperwidth and
> > paperheight, and estimated that the fonts were too large to my
> > taste, then doubled them and felt that the fonts were too small for
> > slides, then I ended up trying multiplying 16x9cm by a factor of
> > 1.5, which gave me 24x13.5cm and I found it was ok.
> > - But one may vary these sizes arbitrary (even using smaller
> > steps and ratios differing from 16/9) depending on the aims to be
> > reached.
> > - It is also possible to specify different units (pt = points, in =
> > inches...)
> >
> > Yours.
> > Olivier.
> >
> > On Sat, 18 Nov 2023 09:53:19 +0530 Ashim Kapoor
> > <ashimkapoor using gmail.com> wrote:
> >
> > > Dear Olivier,
> > >
> > > Many thanks for your reply.
> > >
> > > This works well for me.
> > >
> > > How did you come up with the pagewidth / pageheight numbers?  I do
> > > understand that their ratio = 16:9,
> > > but how did you choose these numbers?
> > >
> > > Best Regards,
> > > Ashim
> > >
> > > On Fri, Nov 17, 2023 at 9:25 PM Olivier Crouzet
> > > <olivier.crouzet using univ-nantes.fr> wrote:
> > > >
> > > > Dear Ashim,
> > > >
> > > > I don't think the aspectratio is appropriate in this context
> > > > because it would imply that the beamer (LaTeX) class is used
> > > > but you're actually using the article (LaTeX) class.
> > > >
> > > > You may use specifications of the geometry package rather than
> > > > specifying options to the class:
> > > >
> > > > e.g. replace your current header:
> > > >
> > > > ---
> > > > title: "Testing landscape and aspect ratio"
> > > > output:
> > > >   pdf_document:
> > > >     number_sections: true
> > > > classoption:
> > > >   - landscape
> > > >   - "aspectratio=169"
> > > > header-includes:
> > > >    - \usepackage{dcolumn}
> > > > documentclass: article
> > > > geometry: margin=1.5cm
> > > > ---
> > > >
> > > > with this one:
> > > >
> > > > ---
> > > > title: "Testing landscape and aspect ratio"
> > > > output:
> > > >   pdf_document:
> > > >     number_sections: true
> > > > header-includes:
> > > >    - \usepackage{dcolumn}
> > > > documentclass: article
> > > > geometry: margin=1.5cm, paperwidth=24cm, paperheight=13.5cm
> > > > ---
> > > >
> > > > Of course, you may change the exact dimensions and it will
> > > > impact the relative font sizes. I've tested it and it generates
> > > > what you want.
> > > >
> > > > Yours.
> > > > Olivier.
> > > >
> > > >
> > > >
> > > >
> > > >
> > > >  On Tue, 14 Nov 2023 10:03:23
> > > > +0530 Ashim Kapoor <ashimkapoor using gmail.com> wrote:
> > > >
> > > > > Dear all,
> > > > >
> > > > > I have posted a query which has received a response but that
> > > > > is not working on my computer.
> > > > >
> > > > > Here is the query:
> > > > >
> > > > > https://stackoverflow.com/questions/77387434/pdf-from-rmarkdown-landscape-and-aspectratio-169
> > > > >
> > > > > Can someone please help me ?
> > > > >
> > > > > Best Regards,
> > > > > Ashim
> > > > >
> > > > > ______________________________________________
> > > > > R-help using r-project.org mailing list -- To UNSUBSCRIBE and more,
> > > > > see https://stat.ethz.ch/mailman/listinfo/r-help
> > > > > PLEASE do read the posting guide
> > > > > http://www.R-project.org/posting-guide.html and provide
> > > > > commented, minimal, self-contained, reproducible code.
> > > >
> > > >
> > > > --
> > > >   Olivier Crouzet, PhD
> > > >   http://olivier.ghostinthemachine.space
> > > >   /Maître de Conférences/
> > > >   @LLING - Laboratoire de Linguistique de Nantes
> > > >     UMR6310 CNRS / Université de Nantes
> > > >
> > > > ______________________________________________
> > > > R-help using r-project.org mailing list -- To UNSUBSCRIBE and more,
> > > > see https://stat.ethz.ch/mailman/listinfo/r-help
> > > > PLEASE do read the posting guide
> > > > http://www.R-project.org/posting-guide.html and provide
> > > > commented, minimal, self-contained, reproducible code.
> >
> >
> > --
> >   Olivier Crouzet, PhD
> >   http://olivier.ghostinthemachine.space
> >   /Maître de Conférences/
> >   @LLING - Laboratoire de Linguistique de Nantes
> >     UMR6310 CNRS / Université de Nantes
> >
> >


-- 
  Olivier Crouzet, PhD
  http://olivier.ghostinthemachine.space
  /Maître de Conférences/
  @LLING - Laboratoire de Linguistique de Nantes
    UMR6310 CNRS / Université de Nantes