Hi Jil --
On 05/28/2016 02:36 PM, Jil Sander wrote:
Dear all,
I am very new to the package development process and I am facing a
beginner's issue I suppose.
The main function of my package automatically saves output files of
intermediate steps (PDF result files as well as R objects containing data)
into the current working directory and re-uses them. Due to the example I
incorporated into the help file of the corresponding function (since I need
a specific amount of executable examples), those output files are generated
automatically and are saved into the top-level folder of the package, which
is obviously not allowed. Is this generally bad practice and if not, is
there a recommend and elegant way how to solve this? E.g. adding a folder
whose name is accepted to be present in the top-level folder and
re-directing the output to it or suppressing the output without the need of
changing the code?
Use tempdir() and possibly tempfile() to output data into a location
where you can write things without making a mess of the user's file system.
It's worth asking why you need to save the intermediate files? It isn't
a common practice in established packages. If it's because your code
takes a very long time to compute, it might help to see if it can be
written more efficiently (e.g., by isolating a small portion that takes
a long time to evaluate, and asking for guidance here in a way that
others can reproduce what you're doing).
Martin
Thank you very much in advance and kind regards
Jil
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