On Thu, 11 Mar 2021 12:57:00 -0800
Jonathan Callahan <jonat...@mazamascience.com> wrote:
> I am building a package using R 4.0.4 on OS X 10.15.7.
>
> In a terminal I type:
>
> R CMD build --resave-data AirSensor
>
> Then, I check with:
>
> R CMD check --as-cran AirSensor_1.0.8.tar.gz
>
> Everything is fine until I see:
>
>
> * checking data for ASCII and uncompressed saves ... WARNING
>
>
>
> Note: significantly better compression could be obtained
>
> by using R CMD build --resave-data
>
> old_size new_size compress
>
> example_pas.rda 1.6Mb 1.1Mb xz
>
> example_pas_raw.rda 114Kb 86Kb xz
>
> example_pat.rda 965Kb 444Kb xz
>
> example_pat_failure_A.rda 527Kb 259Kb xz
>
> example_pat_failure_B.rda 411Kb 198Kb xz
>
> example_sensor_scaqmd.rda 108Kb 76Kb xz
>
> I get the same WARNING if I submit to win-builder.R-project.org.
>
> I've built many packages in the past and am currently stumped as to
> what might be happening.
I had the same problem, and asked about it some time back (c. 4
March) and was informed by Sebastian Meyer that:
> ... in R 4.0.0-4.0.4 the --resave-data option of R CMD build was
> ineffective for packages using LazyData. This bug has recently been
> fixed in R-devel (c79573) and I think the fix should also be ported
> to R-patched and appear in the NEWS.
A temporary workaround (again, thanks to Sebastian Meyer) is to run
tools::resaveRdaFiles()
on your data directory prior to building.
cheers,
Rolf Turner
--
Honorary Research Fellow
Department of Statistics
University of Auckland
Phone: +64-9-373-7599 ext. 88276
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