The fact that zoo:: in one part of the code has a side effect in another seems not to be in the spirit of functional programming or modularity.
On Thu, Jun 24, 2021 at 6:51 PM Simon Urbanek <simon.urba...@r-project.org> wrote: > > Gabor, > > just by using zoo::read.zoo() you *do* load the namespace: > > > args(zoo::read.zoo) > function (file, format = "", tz = "", FUN = NULL, regular = FALSE, > index.column = 1, drop = TRUE, FUN2 = NULL, split = NULL, > aggregate = FALSE, ..., text, read = read.table) > NULL > > sessionInfo() > R Under development (unstable) (2021-06-23 r80548) > Platform: x86_64-apple-darwin19.6.0 (64-bit) > Running under: macOS Catalina 10.15.7 > > Matrix products: default > BLAS: /Volumes/Builds/R/build/lib/libRblas.dylib > LAPACK: /Volumes/Builds/R/build/lib/libRlapack.dylib > > locale: > [1] en_NZ.UTF-8/en_NZ.UTF-8/en_NZ.UTF-8/C/en_NZ.UTF-8/en_NZ.UTF-8 > > attached base packages: > [1] stats graphics grDevices utils datasets methods base > > loaded via a namespace (and not attached): > [1] zoo_1.8-9 compiler_4.2.0 grid_4.2.0 lattice_0.20-44 > > which includes S3 method dispatch tables: > > > methods(as.ts) > [1] as.ts.default* as.ts.zoo* as.ts.zooreg* > see '?methods' for accessing help and source code > > so the behavior is as expected. > > Cheers, > Simon > > > > On 25/06/2021, at 9:56 AM, Gabor Grothendieck <ggrothendi...@gmail.com> > > wrote: > > > > If we start up a vanilla session of R with no packages loaded and > > type the single line of code below as the first line entered then > > we get the output shown below. The NA in the output and the length > > of 7 indicate that as.ts dispatched as.ts.zoo since as.ts.default > > would have resulted in a length of 6 with no NA's. It should not have > > known about as.ts.zoo since we never explicitly loaded the zoo > > package using library or require. > > zoo:: was only used to refer to read.zoo. This seems to be a bug in > > the way R is currently working. > > > > as.ts(zoo::read.zoo(BOD)) > > ## Time Series: > > ## Start = 1 > > ## End = 7 > > ## Frequency = 1 > > ## [1] 8.3 10.3 19.0 16.0 15.6 NA 19.8 > > > > R.version.string > > ## [1] "R version 4.1.0 RC (2021-05-16 r80303)" > > > > -- > > Statistics & Software Consulting > > GKX Group, GKX Associates Inc. > > tel: 1-877-GKX-GROUP > > email: ggrothendieck at gmail.com > > > > ______________________________________________ > > R-devel@r-project.org mailing list > > https://stat.ethz.ch/mailman/listinfo/r-devel > > > -- Statistics & Software Consulting GKX Group, GKX Associates Inc. tel: 1-877-GKX-GROUP email: ggrothendieck at gmail.com ______________________________________________ R-devel@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-devel
