[R-pkg-devel] [r-package-devel] Win.Metafile and package check - "Found the platform-specific device:"

[Vladimir Dergachev]

On Fri, 3 Nov 2023, Wayne.W.Jones using shell.com wrote:

> Dear R-Package-Devel,
>
> As part of GWSDAT package (https://github.com/waynegitshell/GWSDAT) we support the option to output plots to a WMF (https://r-graphics.org/recipe-output-vector-wmf) format if, and only if,  the user is on Windows. However, when I run the package checks on here it complains about using a platform specific function with the following message:
>
>  Found the platform-specific device:
>    'win.metafile'
>  dev.new() is the preferred way to open a new device, in the unlikely
>  event one is needed.
>
> In my opinion this is a false positive - and a similar issue has previously been reported here: https://stackoverflow.com/questions/70585796/unable-to-understand-1-note-in-devtoolscheck-caused-by-a-platform-specific-d
>
> Any ideas on how I modify the code and package submission to automatically pass the checks?

Two suggestions:

   * let users specify the graphics device they want

   * reading manpage for dev.new() it accepts a bunch of options - there is 
probably a way to request the metafile device you want. But I could not 
find that in documentation.

best

Vladimir Dergachev

>
> Thanks,
>
> Wayne
>
>
>
> ----------------------------------------------------------------------------------------
> Wayne Jones
> Principal Data Scientist
> Decarbonisation Data Science
>
> Tel: +44 (0) 207 934 4330
> Projects and Technology, Shell Research Limited, Shell Centre, York Road, London, SE1 7NA
> Email: Wayne.W.Jones using shell.com<mailto:Wayne.W.Jones using shell.com>
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