Re: R dependencies

[Vicente Vera <vicentemvp@gmail.com>]

Hello again,

Finally solved this:

Error in grid.Call.graphics(L_text, as.graphicsAnnot(x$label), x$x, x$y,  :
X11 font -adobe-helvetica-%s-%s-*-*-%d-*-*-*-*-*-*-*, face 2 at size
11 could not be loaded

The problem arose because R wasn't using cairo for font rendering.
Some simple configurations in ~/.Rprofile solved it:

setHook(packageEvent("grDevices", "onLoad"),
        function(...) grDevices::X11.options(type = "cairo",
                                             antialias = "subpixel"))

The code changes the X11 device (used for plotting) type from "XLib"
to "cairo", once it gets called.

(just for the record, i'm not using GuixSD)

2015-09-03 11:55 GMT-03:00 Vicente Vera <vicentemvp@gmail.com>:
> Hi,
>
> Sure. The error message is this:
>
> X11 font -adobe-helvetica-%s-%s-*-*-%d-*-*-*-*-*-*-*, face 5 at size
> 15 could not be loaded
>
> No plot is being drawn; only a blank window appears.
>
> The code:
>
> ggplot(data = fig1, aes(x = Var1, y = Freq, fill =
> brewer.pal(length(levels(the_data$VARIABLE1)), "Set3"))) +
>     geom_bar(stat = "identity") +
>     scale_fill_identity() +
>     labs(x = "x", y = "y") +
>     geom_text(aes(label = perc), vjust = 2, size = 4, colour =
> "black", fontface = "bold") +
>     scale_x_discrete(labels = c("a", "b", "c")) +
>     theme(panel.background = element_blank(),
>           line = element_blank(),
>           axis.text.y = element_blank())
>
> On my base system, R 3.2.1 + ggplot2 draws the plot with no problem.
>
> It might be related to a missing font or font alias in the Guix store
> (not familiar enough with it to catch the issue).
>
> Now, I didn't installed ggplot2 through Guix, so that could be a problem.
>
> 2015-09-03 3:29 GMT-03:00 Ricardo Wurmus <rekado@elephly.net>:
>> Hi Vicente,
>>
>>> Going back to the R dependencies topic, I ran across an issue when
>>> trying to draw a plot (with ggplot2). But first some context:
>>>
>>> - I'm not using GuixSD but a binary installation over Manjaro OpenRC;
>>> several base packages missing on Guix
>>> - I only have other two Guix packages installed: xpdf & abbaye
>>
>> All Guix packages capture the complete graph of dependencies, so you’ll
>> always end up with the dependent packages in ‘/gnu/store’ even if only
>> those packages appear in your profile that have been explicitly
>> installed.
>>
>>> - I installed ggplot2 through install.packages("ggplot2") in R (Guix package)
>>
>> Note that ggplot2 has been packaged for Guix:
>>
>>     guix package -i r-ggplot2
>>
>>> R complained about some fonts missing, but I think it could be related
>>> to a missing X11 dependency (complete Xorg maybe?). What could it be?
>>
>> What is the exact error message you get?  Is any plot drawn at all?
>> What is the code you use to draw the plot?
>>
>> ~~ Ricardo
>>