Thanks a lot - I'm sure you are right that I could just use different names but
I cannot understand why it could cause problem to have two different well
formated .RData files in the /data directory both with an "x" - is that really
illegal? I cannot see it stated in the official munual - but it is long (wrting
r extensions)
-BW
Troels
-----Oprindelig meddelelse-----
Fra: Michael Dewey <li...@dewey.myzen.co.uk>
Sendt: 13. januar 2019 12:56
Til: Troels Ring <tr...@gvdnet.dk>; package-develop
<r-package-devel@r-project.org>
Emne: Re: [R-pkg-devel] RData files with identical objects in package
Dear Troels
Perhaps I misunderstand what you are trying to do but would it be possible to
put each x and y into a list or a dataframe with different names and then
modify your usgae to pull them from there? Then there would be no danger of
users getting the wrong x and y
Michael
On 13/01/2019 08:38, Troels Ring wrote:
> Dear friends - I have a package under creation making heavy
> calculations on chemical/clinical data and I plan to include as
> "examples" the use of some literature data used in my papers. To
> illustrate what then occurs, I made two RData files consisting only of
> x and y with different values for x and y like
>
> X <- 100
>
> Y <- 1000
>
> save(x,y,file="first.RData")
>
> and then a new x and y in "second" with x <- 45 and y <- 32
>
> When I put these in a "data" directory of a new package without
> further ado in RStudio
>
> Ctrl-shift-L
>
> Ctrl-shift-B
>
>
>
> .there is a warning
>
> * installing *source* package 'try' ...
>
> ** R
>
> ** data
>
> *** moving datasets to lazyload DB
>
> warning: objects 'x', 'y' are created by more than one data call
>
> ** byte-compile and prepare package for lazy loading
>
> ** help
>
> converting help for package 'try'
>
> *** installing help indices
>
> finding HTML links ... hello html
>
> done
>
>
>
> Now, when I clear the workspace:
>
>> ls()
> character(0)
>> devtools::load_all(".")
> Loading try
>
> Restarting R session...
>
>> library(try)
>> ls()
> character(0)
>> x #-- so even if workspace Is empty x is still kept
> [1] 45
>> data(first) # and "first" is not seen x
> [1] 45
>
>
>
> x is still present - and y
>
>
>
> I have been reading and searching in "Writing R extensions" but so far
> didn't find the clue.
>
> Seemingly it is the file with the last name that is assessed - when I rename
> first.RData to "xfile.RData" we get 100 and 1000.
>
> Now and then when running ctrl-shift-L and - B we see
>
>
>
> Attaches package: 'try'
>
> The following objects are masked _by_ '.GlobalEnv':
> x, y
>
>
>
> Sorry for these problems -
>
> BW
> Troels
>
>
> [[alternative HTML version deleted]]
>
> ______________________________________________
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> https://stat.ethz.ch/mailman/listinfo/r-package-devel
>
--
Michael
http://www.dewey.myzen.co.uk/home.html
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