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. Sarah On Wed, Apr 25, 2018 at 12:30 PM, Jose A Guijarro <jguijar...@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: > > \examples{ > #Set a temporal working directory and write input files: > wd <- tempdir() > setwd(wd) > data(Ttest) #(This loads matrix 'dat' and data.frame 'est.c') > write(dat,'Ttest_1981-2000.dat') > write.table(est.c,'Ttest_1981-2000.est',row.names=FALSE,col.names=FALSE) > rm(dat,est.c) #remove loaded data from memory space > #Now run the example: > dd2m('Ttest',1981,2000) > #Input and output files can be found in directory: > print(wd) > } > > But now CRAN checks return this warning ten times (one for every example > in the package): > > Warning: working directory was changed to â/tmp/RtmpWSRK2Fâ, resetting > > Any hint on how to solve the problem will be highly appreciated... > > Jose > -- Sarah Goslee http://www.functionaldiversity.org ______________________________________________ R-package-devel@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-package-devel