[R-pkg-devel] Cascade effect of non-available packages?

[Tiago Olivoto]

Dear Dirk,
Thank you so much for your tips.
I'll implement them and try a new submission.

Best regards,
Olivoto


Em dom., 3 de nov. de 2024 às 14:08, Dirk Eddelbuettel <edd using debian.org>
escreveu:

>
> Tiago,
>
> Looking at https://www.stats.ox.ac.uk/pub/bdr/noSuggests/pliman.out
> we see it errors after trying '* checking examples ...':
>
>    * checking examples ... ERROR
>    Running examples in ‘pliman-Ex.R’ failed
>    The error most likely occurred in:
>
>    > ### Name: as_image
>    > ### Title: Create an 'Image' object
>    > ### Aliases: as_image
>    >
>    > ### ** Examples
>    >
>    > img <-
>    + as_image(rnorm(150 * 150 * 3),
>    +          dim = c(150, 150, 3),
>    +          colormode = 'Color')
>    Error in loadNamespace(x) : there is no package called ‘EBImage’
>    Calls: as_image ... loadNamespace -> withRestarts -> withOneRestart ->
> doWithOneRestart
>    Execution halted
>    * checking PDF version of manual ... [12s/12s] OK
>
> Looking at as_image.Rd in
> https://github.com/NEPEM-UFSC/pliman/blob/24a1781073f9b1a3141002f0985b0542b1f7178d/man/as_image.Rd
> we see that you do have an \donttest{} there but that alone does not
> protect
> you. Instead of
>
>    \examples{
>    \donttest{
>    library(pliman)
>    img <-
>    as_image(rnorm(150 * 150 * 3),
>             dim = c(150, 150, 3),
>             colormode = 'Color')
>    plot(img)
>    }
>
> I would do something like
>
>   if (interactive() && requireNamespace("EBImage", quietly=TRUE)) {
>     library(pliman)
>     img <- as_image(rnorm(150 * 150 * 3), dim = c(150, 150, 3), colormode
> = 'Color')
>     plot(img)
>   }
>
> where you could of course put that condition into a helper function.
>
> Hope this helps,  Dirk
>
> --
> dirk.eddelbuettel.com | @eddelbuettel | edd using debian.org
>

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