[R] Paths in knitr

[Yihui Xie]

I'd say it is an expert-only option. If you do not understand what it
means, I strongly recommend you not to set it.

Similarly, you set the root_dir option and I don't know why you did it, but
it is a typo anyway (should be root.dir).

Regards,
Yihui
--
https://yihui.name

On Fri, Jun 9, 2017 at 4:50 AM, <G.Maubach at gmx.de> wrote:

> Hi Yi,
>
> many thanks for your reply.
>
> Why I do have to se the base.dir option? Cause, to me it is not clear from
> the documentation, where knitr looks for data files and how I can adjust
> knitr to tell it where to look. base.dir was a try, but did not work.
>
> Can you give me a hint where I can find information/documentation on this
> path issue?
>
> Kind regards
>
> Georg
>
>
> > Gesendet: Donnerstag, 08. Juni 2017 um 15:05 Uhr
> > Von: "Yihui Xie" <xie at yihui.name>
> > An: G.Maubach at weinwolf.de
> > Cc: "R Help" <r-help at r-project.org>
> > Betreff: Re: [R] Paths in knitr
> >
> > Why do you have to set the base.dir option?
> >
> > Regards,
> > Yihui
> > --
> > https://yihui.name
> >
> >
> > On Thu, Jun 8, 2017 at 6:15 AM,  <G.Maubach at weinwolf.de> wrote:
> > > Hi All,
> > >
> > > I have to compile a report for the management and decided to use
> RMarkdown
> > > and knitr. I compiled all needed plots (using separate R scripts)
> before
> > > compiling the report, thus all plots reside in my graphics directory.
> The
> > > RMarkdown report needs to access these files. I have defined
> > >
> > > ```{r setup, include = FALSE}
> > > knitr::opts_knit$set(
> > >   echo = FALSE,
> > >   xtable.type = "html",
> > >   base.dir = "H:/2017/Analysen/Kundenzufriedenheit/Auswertung",
> > >   root_dir = "H:/2017/Analysen/Kundenzufriedenheit/Auswertung",
> > >   fig.path = "results/graphics")  # relative path required, see
> > > http://yihui.name/knitr/options
> > > ```
> > >
> > > and then referenced my plot using
> > >
> > > <img src = "email_distribution_pie.png"></img>
> > >
> > > because I want to be able to customize the plotting attributes.
> > >
> > > But that fails with the message "pandoc.exe: Could not fetch
> > > email_distribution_pie.png".
> > >
> > > If I give it the absolute path
> > > "H:/2017/Analysen/Kundenzufriedenheit/Auswertung/results/
> graphics/email_distribution_pie.png"
> > > it works fine as well if I copy the plot into the directory where the
> > > report.RMD file resides.
> > >
> > > How can I tell knitr to fetch the ready-made plots from the graphics
> > > directory?
> > >
> > > Kind regards
> > >
> > > Georg
>

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