[R-pkg-devel] How to write example results to a tempdir()?
Jose A Guijarro
jguijarrop at aemet.es
Wed Apr 25 19:45:37 CEST 2018
Many thanks for your advise, Sarah!
I will try to implement it. (Now I will have to change all my reading and
writing sentences of all my functions, because they read/write from/to
the users working directory...)
El 25/04/18 a las 19:32, Sarah Goslee escribió:
> Don't change the working directory! That has all kinds of unpleasant
> side effects for the unsuspecting user, possibly even more so than
> writing to a file.
> Instead, write the file to the temp directory, and read it from there, with e.g.
> wd <- tempdir()
> write(dat, file.path(wd, 'Ttest_1981-2000.dat'))
> Using file.path() means that the appropriate path delimiter for that
> OS will be used.
> On Wed, Apr 25, 2018 at 12:30 PM, Jose A Guijarro <jguijarrop at aemet.es> wrote:
>> Dear all,
>> I am struggling to update my package climatol from version 3.0 to 3.1.
>> The old version had all examples under a "dontrun" section because they
>> needed files created by other examples that the user had to run first.
>> As this is not acceptable anymore, I made the examples runnable and
>> prepared small ad-hoc datasets, but then writing files to the user space
>> is against the CRAN policy rules, and I was suggested to run them on a
>> temporal directory. Therefore I changed all my examples to read/write
>> files to a tempdir(), as in:
>> #Set a temporal working directory and write input files:
>> wd <- tempdir()
>> data(Ttest) #(This loads matrix 'dat' and data.frame 'est.c')
>> rm(dat,est.c) #remove loaded data from memory space
>> #Now run the example:
>> #Input and output files can be found in directory:
>> But now CRAN checks return this warning ten times (one for every example
>> in the package):
>> Warning: working directory was changed to ‘/tmp/RtmpWSRK2F’, resetting
>> Any hint on how to solve the problem will be highly appreciated...
Dr. José A. Guijarro
Logotipo de Aemet
Delegación Territorial en Illes Balears
Jefe de la Unidad de Estudios Meteorológicos del Mediterráneo
Tel. (+34) 971145409 (Tno. interno: 50790)
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