[R] project path in Rmd

Ivan Calandra c@|@ndr@ @end|ng |rom rgzm@de
Thu Apr 2 10:30:29 CEST 2020

Dear useRs,

I believe this is R code so appropriate for this list, but let me know
if this relates more to RStudio itself.

I am working on an RStudio project. In that project directory, I have a
folder called 'analysis' and in there a folder called 'scripts'
My data files needed for the scripts are in '~/analysis/raw_data' and
the output should be in '~/analysis/derived_data'.

My scripts are Rmd files, so when I knit them, their working directory
is where they are located, i.e. '~/analysis/scripts'. The problem I then
have is to specify the path for 'raw_data' and 'derived_data' since
during the rendering I am not relative to the project directory anymore.
And these folders are not subfolders of the working directory 
I hope I am clear here...

I would like to avoid absolute paths of course, but I do not know how to
What would be nice is a way to get the project directory in the scripts,
rather than their working directory.
Does that make sense?

Thank you in advance

Dr. Ivan Calandra
TraCEr, laboratory for Traceology and Controlled Experiments
MONREPOS Archaeological Research Centre and
Museum for Human Behavioural Evolution
Schloss Monrepos
56567 Neuwied, Germany
+49 (0) 2631 9772-243

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