[R-pkg-devel] dplyr usage inside another package

[Jonathan Callahan]

Thanks Jenny! Just the advice I was looking for.

On Mon, Aug 10, 2015 at 4:40 PM, Jennifer Bryan <jenny at stat.ubc.ca> wrote:

> Hi Jonathan,
>
> Re: this note: no visible binding for global variable ‘datetime’
>
> In programming and packages, it is recommended to use special versions of
> dplyr’s single table verbs, e.g., use `filter_()` as opposed to `filter()`.
> Note the underscore. The “underscore” functions use standard evaluation
> instead of non-standard evaluation. This vignette contains more details:
>
> https://cran.rstudio.com/web/packages/dplyr/vignettes/nse.html
>
> HTH,
> Jenny
>
> > On Aug 10, 2015, at 3:35 PM, Jonathan Callahan <
> jonathan at mazamascience.com> wrote:
> >
> > Greetings,
> >
> > I'm using dplyr inside of another package with examples like this:
> >
> > data <- dplyr::filter(data, datetime >= trange[1], datetime <= trange[2])
> >
> >
> > When I run my package through R CMD check I get the following NOTES:
> >
> > monitorSubsetData: no visible binding for global variable ‘datetime’
> >
> >
> > I already have dplyr listed in the package Depends: section of the
> > DESCRIPTION.
> >
> > I'm also encountering
> >
> > no visible global function definition for ‘matches’
> >
> >
> > when I try to use the dplyr internal function matches().
> >
> > Is there any way to allow for dplyr syntactic sugar inside of my package
> or
> > do I need to be pedantic and say data$datetime in the first example and
> > dplyr::matches in the second? (Will dplyr::matches even work when it is
> not
> > an exported function?)
> >
> > Thanks,
> >
> > Jon
> >
> > --
> > Jonathan Callahan, PhD
> > Mazama Science
> > 206-708-5028
> > mazamascience.com
> >
> >       [[alternative HTML version deleted]]
> >
> > ______________________________________________
> > R-package-devel at r-project.org mailing list
> > https://stat.ethz.ch/mailman/listinfo/r-package-devel
>
>


-- 
Jonathan Callahan, PhD
Mazama Science
206-708-5028
mazamascience.com

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