[R] smoothScatter() and the KernSmooth package

[Jeffrey Dick]

Hi Witold,

See also this thread on R-pkg-devel. Quoting Duncan Murdoch, "That
looks like a bug in grDevices."

https://stat.ethz.ch/pipermail/r-package-devel/2019q3/004287.html

Cheers,
Jeff



On Wed, Jun 17, 2020 at 4:59 PM Witold E Wolski <wewolski using gmail.com> wrote:
>
> Hello,
>
> I am getting the following error when running a package check
> ```
>   Error in loadNamespace(name) : there is no package called 'KernSmooth'
>   Calls: <Anonymous> ... loadNamespace -> withRestarts ->
> withOneRestart -> doWithOneRestart
>   Execution halted
> ```
>
> The error happens in a function which calls graphics::smoothScatter
>
> I found this e-mail on the r-devel list where this problem is also reported.
> https://stat.ethz.ch/pipermail/r-devel/2015-February/070671.html
>
> So I could add KernSmooth to Suggest in the DESCRIPTION but I have a
> few questions:
> (and I am citing from the e-mail above to which I could not find a reply):
>
> "I have a few questions: isn't it unusual the way smoothScatter calls
>
> grDevices:::.smoothScatterCalcDensity() and KernSmooth::bkde2D(),
> i.e., without requiring the packages?
> Shouldn't "graphics" suggest "KernSmooth"?
> "
>
> best regards
> Witek
>
>
>
>
> --
> Witold Eryk Wolski
>
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